$( function() {

    var json = [
        {
            "Year": "1950",
            "Population": "2,556,505,579",
            "Annual growth rate (%)": "1.45",
            "Population change": "37,347,602"
        },
        {
            "Year": "1951",
            "Population": "2,593,853,181",
            "Annual growth rate (%)": "1.6",
            "Population change": "41,871,643"
        },
        {
            "Year": "1952",
            "Population": "2,635,724,824",
            "Annual growth rate (%)": "1.7",
            "Population change": "45,323,546"
        },
        {
            "Year": "1953",
            "Population": "2,681,048,370",
            "Annual growth rate (%)": "1.78",
            "Population change": "48,219,116"
        },
        {
            "Year": "1954",
            "Population": "2,729,267,486",
            "Annual growth rate (%)": "1.88",
            "Population change": "51,917,512"
        },
        {
            "Year": "1955",
            "Population": "2,781,184,998",
            "Annual growth rate (%)": "1.9",
            "Population change": "53,250,385"
        },
        {
            "Year": "1956",
            "Population": "2,834,435,383",
            "Annual growth rate (%)": "1.96",
            "Population change": "56,101,768"
        },
        {
            "Year": "1957",
            "Population": "2,890,537,151",
            "Annual growth rate (%)": "1.95",
            "Population change": "56,842,854"
        },
        {
            "Year": "1958",
            "Population": "2,947,380,005",
            "Annual growth rate (%)": "1.77",
            "Population change": "52,643,623"
        },
        {
            "Year": "1959",
            "Population": "3,000,023,628",
            "Annual growth rate (%)": "1.4",
            "Population change": "42,365,981"
        },
        {
            "Year": "1960",
            "Population": "3,042,389,609",
            "Annual growth rate (%)": "1.34",
            "Population change": "41,053,737"
        },
        {
            "Year": "1961",
            "Population": "3,083,443,346",
            "Annual growth rate (%)": "1.81",
            "Population change": "56,201,866"
        },
        {
            "Year": "1962",
            "Population": "3,139,645,212",
            "Annual growth rate (%)": "2.2",
            "Population change": "69,809,783"
        },
        {
            "Year": "1963",
            "Population": "3,209,454,995",
            "Annual growth rate (%)": "2.2",
            "Population change": "71,435,095"
        },
        {
            "Year": "1964",
            "Population": "3,280,890,090",
            "Annual growth rate (%)": "2.09",
            "Population change": "69,261,354"
        },
        {
            "Year": "1965",
            "Population": "3,350,151,444",
            "Annual growth rate (%)": "2.08",
            "Population change": "70,287,296"
        },
        {
            "Year": "1966",
            "Population": "3,420,438,740",
            "Annual growth rate (%)": "2.02",
            "Population change": "69,734,541"
        },
        {
            "Year": "1967",
            "Population": "3,490,173,281",
            "Annual growth rate (%)": "2.04",
            "Population change": "72,054,474"
        },
        {
            "Year": "1968",
            "Population": "3,562,227,755",
            "Annual growth rate (%)": "2.08",
            "Population change": "74,911,189"
        },
        {
            "Year": "1969",
            "Population": "3,637,138,944",
            "Annual growth rate (%)": "2.06",
            "Population change": "75,674,674"
        },
        {
            "Year": "1970",
            "Population": "3,712,813,618",
            "Annual growth rate (%)": "2.08",
            "Population change": "77,855,248"
        },
        {
            "Year": "1971",
            "Population": "3,790,668,866",
            "Annual growth rate (%)": "2",
            "Population change": "76,494,186"
        },
        {
            "Year": "1972",
            "Population": "3,867,163,052",
            "Annual growth rate (%)": "1.94",
            "Population change": "75,826,051"
        },
        {
            "Year": "1973",
            "Population": "3,942,989,103",
            "Annual growth rate (%)": "1.87",
            "Population change": "74,626,636"
        },
        {
            "Year": "1974",
            "Population": "4,017,615,739",
            "Annual growth rate (%)": "1.79",
            "Population change": "72,591,465"
        },
        {
            "Year": "1975",
            "Population": "4,090,207,204",
            "Annual growth rate (%)": "1.73",
            "Population change": "71,216,701"
        },
        {
            "Year": "1976",
            "Population": "4,161,423,905",
            "Annual growth rate (%)": "1.72",
            "Population change": "71,989,405"
        },
        {
            "Year": "1977",
            "Population": "4,233,413,310",
            "Annual growth rate (%)": "1.69",
            "Population change": "72,083,441"
        },
        {
            "Year": "1978",
            "Population": "4,305,496,751",
            "Annual growth rate (%)": "1.73",
            "Population change": "74,933,098"
        },
        {
            "Year": "1979",
            "Population": "4,380,429,849",
            "Annual growth rate (%)": "1.64",
            "Population change": "72,256,895"
        },
        {
            "Year": "1980",
            "Population": "4,452,686,744",
            "Annual growth rate (%)": "1.84",
            "Population change": "82,712,810"
        },
        {
            "Year": "1981",
            "Population": "4,535,399,554",
            "Annual growth rate (%)": "1.75",
            "Population change": "79,967,346"
        },
        {
            "Year": "1982",
            "Population": "4,615,366,900",
            "Annual growth rate (%)": "1.74",
            "Population change": "81,043,957"
        },
        {
            "Year": "1983",
            "Population": "4,696,410,857",
            "Annual growth rate (%)": "1.69",
            "Population change": "80,166,808"
        },
        {
            "Year": "1984",
            "Population": "4,776,577,665",
            "Annual growth rate (%)": "1.69",
            "Population change": "81,519,858"
        },
        {
            "Year": "1985",
            "Population": "4,858,097,523",
            "Annual growth rate (%)": "1.71",
            "Population change": "83,727,559"
        },
        {
            "Year": "1986",
            "Population": "4,941,825,082",
            "Annual growth rate (%)": "1.73",
            "Population change": "86,219,610"
        },
        {
            "Year": "1987",
            "Population": "5,028,044,692",
            "Annual growth rate (%)": "1.71",
            "Population change": "86,904,352"
        },
        {
            "Year": "1988",
            "Population": "5,114,949,044",
            "Annual growth rate (%)": "1.68",
            "Population change": "86,553,193"
        },
        {
            "Year": "1989",
            "Population": "5,201,502,237",
            "Annual growth rate (%)": "1.66",
            "Population change": "87,326,009"
        },
        {
            "Year": "1990",
            "Population": "5,288,828,246",
            "Annual growth rate (%)": "1.56",
            "Population change": "82,961,488"
        },
        {
            "Year": "1991",
            "Population": "5,371,789,734",
            "Annual growth rate (%)": "1.56",
            "Population change": "84,615,734"
        },
        {
            "Year": "1992",
            "Population": "5,456,405,468",
            "Annual growth rate (%)": "1.49",
            "Population change": "82,021,956"
        },
        {
            "Year": "1993",
            "Population": "5,538,427,424",
            "Annual growth rate (%)": "1.44",
            "Population change": "80,603,671"
        },
        {
            "Year": "1994",
            "Population": "5,619,031,095",
            "Annual growth rate (%)": "1.43",
            "Population change": "80,882,232"
        },
        {
            "Year": "1995",
            "Population": "5,699,913,327",
            "Annual growth rate (%)": "1.4",
            "Population change": "80,077,441"
        },
        {
            "Year": "1996",
            "Population": "5,779,990,768",
            "Annual growth rate (%)": "1.35",
            "Population change": "78,382,248"
        },
        {
            "Year": "1997",
            "Population": "5,858,373,016",
            "Annual growth rate (%)": "1.31",
            "Population change": "77,368,308"
        },
        {
            "Year": "1998",
            "Population": "5,935,741,324",
            "Annual growth rate (%)": "1.28",
            "Population change": "76,699,424"
        },
        {
            "Year": "1999",
            "Population": "6,012,440,748",
            "Annual growth rate (%)": "1.26",
            "Population change": "76,242,806"
        },
        {
            "Year": "2000",
            "Population": "6,088,683,554",
            "Annual growth rate (%)": "1.25",
            "Population change": "76,640,086"
        },
        {
            "Year": "2001",
            "Population": "6,165,323,640",
            "Annual growth rate (%)": "1.23",
            "Population change": "76,394,040"
        },
        {
            "Year": "2002",
            "Population": "6,241,717,680",
            "Annual growth rate (%)": "1.21",
            "Population change": "75,708,715"
        },
        {
            "Year": "2003",
            "Population": "6,317,426,395",
            "Annual growth rate (%)": "1.19",
            "Population change": "75,694,545"
        },
        {
            "Year": "2004",
            "Population": "6,393,120,940",
            "Annual growth rate (%)": "1.18",
            "Population change": "76,008,796"
        },
        {
            "Year": "2005",
            "Population": "6,469,129,736",
            "Annual growth rate (%)": "1.18",
            "Population change": "76,754,703"
        },
        {
            "Year": "2006",
            "Population": "6,545,884,439",
            "Annual growth rate (%)": "1.18",
            "Population change": "77,687,516"
        },
        {
            "Year": "2007",
            "Population": "6,623,571,955",
            "Annual growth rate (%)": "1.16",
            "Population change": "77,193,924"
        },
        {
            "Year": "2008",
            "Population": "6,700,765,879",
            "Annual growth rate (%)": "1.13",
            "Population change": "76,151,586"
        },
        {
            "Year": "2009",
            "Population": "6,776,917,465",
            "Annual growth rate (%)": "1.12",
            "Population change": "76,101,949"
        },
        {
            "Year": "2010",
            "Population": "6,853,019,414",
            "Annual growth rate (%)": "1.1",
            "Population change": "76,078,737"
        },
        {
            "Year": "2011",
            "Population": "6,929,098,151",
            "Annual growth rate (%)": "1.09",
            "Population change": "75,690,177"
        },
        {
            "Year": "2012",
            "Population": "7,004,788,328",
            "Annual growth rate (%)": "1.07",
            "Population change": "75,387,222"
        },
        {
            "Year": "2013",
            "Population": "7,080,175,550",
            "Annual growth rate (%)": "1.06",
            "Population change": "75,338,512"
        },
        {
            "Year": "2014",
            "Population": "7,155,514,062",
            "Annual growth rate (%)": "1.04",
            "Population change": "75,049,628"
        },
        {
            "Year": "2015",
            "Population": "7,230,563,690",
            "Annual growth rate (%)": "1.03",
            "Population change": "74,655,713"
        },
        {
            "Year": "2016",
            "Population": "7,305,219,403",
            "Annual growth rate (%)": "1.01",
            "Population change": "74,180,657"
        },
        {
            "Year": "2017",
            "Population": "7,379,400,060",
            "Annual growth rate (%)": "0.99",
            "Population change": "73,486,592"
        },
        {
            "Year": "2018",
            "Population": "7,452,886,652",
            "Annual growth rate (%)": "0.97",
            "Population change": "72,652,993"
        },
        {
            "Year": "2019",
            "Population": "7,525,539,645",
            "Annual growth rate (%)": "0.95",
            "Population change": "71,699,093"
        },
        {
            "Year": "2020",
            "Population": "7,597,238,738",
            "Annual growth rate (%)": "0.93",
            "Population change": "70,803,837"
        },
        {
            "Year": "2021",
            "Population": "7,668,042,575",
            "Annual growth rate (%)": "0.91",
            "Population change": "69,932,250"
        },
        {
            "Year": "2022",
            "Population": "7,737,974,825",
            "Annual growth rate (%)": "0.89",
            "Population change": "68,927,398"
        },
        {
            "Year": "2023",
            "Population": "7,806,902,223",
            "Annual growth rate (%)": "0.87",
            "Population change": "67,841,959"
        },
        {
            "Year": "2024",
            "Population": "7,874,744,182",
            "Annual growth rate (%)": "0.84",
            "Population change": "66,699,289"
        },
        {
            "Year": "2025",
            "Population": "7,941,443,471",
            "Annual growth rate (%)": "0.82",
            "Population change": "65,627,670"
        },
        {
            "Year": "2026",
            "Population": "8,007,071,141",
            "Annual growth rate (%)": "0.8",
            "Population change": "64,618,718"
        },
        {
            "Year": "2027",
            "Population": "8,071,689,859",
            "Annual growth rate (%)": "0.78",
            "Population change": "63,569,367"
        },
        {
            "Year": "2028",
            "Population": "8,135,259,226",
            "Annual growth rate (%)": "0.77",
            "Population change": "62,498,636"
        },
        {
            "Year": "2029",
            "Population": "8,197,757,862",
            "Annual growth rate (%)": "0.75",
            "Population change": "61,409,243"
        },
        {
            "Year": "2030",
            "Population": "8,259,167,105",
            "Annual growth rate (%)": "0.73",
            "Population change": "60,387,312"
        },
        {
            "Year": "2031",
            "Population": "8,319,554,417",
            "Annual growth rate (%)": "0.71",
            "Population change": "59,434,876"
        },
        {
            "Year": "2032",
            "Population": "8,378,989,293",
            "Annual growth rate (%)": "0.7",
            "Population change": "58,473,280"
        },
        {
            "Year": "2033",
            "Population": "8,437,462,573",
            "Annual growth rate (%)": "0.68",
            "Population change": "57,495,609"
        },
        {
            "Year": "2034",
            "Population": "8,494,958,182",
            "Annual growth rate (%)": "0.66",
            "Population change": "56,487,279"
        },
        {
            "Year": "2035",
            "Population": "8,551,445,461",
            "Annual growth rate (%)": "0.65",
            "Population change": "55,520,922"
        },
        {
            "Year": "2036",
            "Population": "8,606,966,383",
            "Annual growth rate (%)": "0.63",
            "Population change": "54,605,240"
        },
        {
            "Year": "2037",
            "Population": "8,661,571,623",
            "Annual growth rate (%)": "0.62",
            "Population change": "53,671,305"
        },
        {
            "Year": "2038",
            "Population": "8,715,242,928",
            "Annual growth rate (%)": "0.6",
            "Population change": "52,712,536"
        },
        {
            "Year": "2039",
            "Population": "8,767,955,464",
            "Annual growth rate (%)": "0.59",
            "Population change": "51,724,342"
        },
        {
            "Year": "2040",
            "Population": "8,819,679,806",
            "Annual growth rate (%)": "0.57",
            "Population change": "50,774,182"
        },
        {
            "Year": "2041",
            "Population": "8,870,453,988",
            "Annual growth rate (%)": "0.56",
            "Population change": "49,865,285"
        },
        {
            "Year": "2042",
            "Population": "8,920,319,273",
            "Annual growth rate (%)": "0.55",
            "Population change": "48,921,986"
        },
        {
            "Year": "2043",
            "Population": "8,969,241,259",
            "Annual growth rate (%)": "0.53",
            "Population change": "47,940,235"
        },
        {
            "Year": "2044",
            "Population": "9,017,181,494",
            "Annual growth rate (%)": "0.52",
            "Population change": "46,926,143"
        },
        {
            "Year": "2045",
            "Population": "9,064,107,637",
            "Annual growth rate (%)": "0.51",
            "Population change": "45,941,983"
        },
        {
            "Year": "2046",
            "Population": "9,110,049,620",
            "Annual growth rate (%)": "0.49",
            "Population change": "44,990,101"
        },
        {
            "Year": "2047",
            "Population": "9,155,039,721",
            "Annual growth rate (%)": "0.48",
            "Population change": "44,017,110"
        },
        {
            "Year": "2048",
            "Population": "9,199,056,831",
            "Annual growth rate (%)": "0.47",
            "Population change": "43,026,715"
        },
        {
            "Year": "2049",
            "Population": "9,242,083,546",
            "Annual growth rate (%)": "0.45",
            "Population change": "42,023,878"
        }
    ];

    var results,
        data = [],
        chart,
        bars,
        margin = 100,
        w = 8,
        h = 500,
        x, y,
        xAxis, yAxis;

    results = d3.map( json );
    results.forEach( function( key, val ) {
        var result = {};
        result.year = new Date(parseInt( val.Year, 10 ), 0, 1);
        result.population = parseInt( val.Population.replace( /,/g, '' ), 10 );
        data.push( result );
    } );

    chart = d3.select( 'body' ).append( 'svg' )
        .attr( 'class', 'chart' )
        .attr( 'width', 1100 )
        .attr( 'height', h )
        .append('g');

    d3.select('svg g')
        .attr('transform', 'translate(50, 50)');

    x = d3.time.scale()
        .domain( [data[0].year, d3.time.year.offset(data[data.length - 1].year, 1)] )
        .range( [0, w * data.length] )

    y = d3.scale.linear()
        .domain( [0, d3.max( data, function( d ) { return d.population; } )] )
        .rangeRound( [0, h - margin] );

    // Bars
    bars = chart.append('g')
        .attr('class', 'bars');

    bars.selectAll( 'rect' )
        .data( data )
      .enter().append( 'rect' )
        .attr( 'x', function( d, i ) { return x( d.year ) - .5; } )
        .attr( 'y', function( d ) { return (h - margin) - y( d.population ) + .5 } )
        .attr( 'width', w )
        .attr( 'height', function( d ) { return y( d.population ) } )
        .append('g');

    // Axis
    xAxis = d3.svg.axis()
        .scale(x)
        .ticks(20)
        .tickSize(6, 3, 1);

    yAxis = d3.svg.axis()
        .scale(d3.scale.linear().domain( [0, d3.max( data, function( d ) { return d.population; } )] ).rangeRound( [h - margin, 0] ))
        .tickSize(6, 3, 1)
        .orient('right');

    chart.append('g')
        .attr('class', 'x axis')
        .attr('transform', 'translate(0, ' + (h - margin) + ')')
        .call(xAxis);

    chart.append('g')
        .attr('class', 'y axis')
        .attr('transform', 'translate(' + x.range()[1] + ')')
        .call(yAxis);

} );