OECD House Price to income index

Data source: OECD

<!DOCTYPE html>
<meta charset="utf-8">
<style>

body {
  font: 10px Arial;
  margin: 0;
  
}

.line {
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  stroke: #426789;
  stroke-width: 2px;
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.area {
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g#xAxisG text, g#yAxisG text {
	stroke: none;
	fill: silver;
	font-size: 9px;
}

header, div#source {
	margin-left: 40px;
	margin-bottom: 38px;
}

</style>
<body>

var margin = {top: 8, right: 15, bottom: 20, left: 40},
    width = 800 - margin.left - margin.right,
    height = 500 - margin.top - margin.bottom;

var xScale = d3.scalePoint()
    .range([0, width]);

var yScale = d3.scaleLinear()
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var yAxis = d3.axisLeft()
  .scale(yScale)
  //.ticks(3);
  
var xAxis = d3.axisBottom()
  .scale(xScale);

var line = d3.line()
    .x(function(d) { return xScale(d.TIME); })
    .y(function(d) { return yScale(d.Value); });

d3.csv("data-price-income.csv", convertTextToNumbers, function(error, data) {
  
  
  
  var quarters = d3.nest()
      .key(function(d) { return d.TIME; })
  		.sortKeys(d3.ascending)
      .entries(data);
  
  var xScaleDomain = [];
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    xScaleDomain.push(q.key); 
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  xScale.domain(xScaleDomain);
  yScale.domain([0,d3.max(data, function(d) {  return d.Value; })]);
  
  // Nest data by subject.
  var countries = d3.nest()
      .key(function(d) { return d.Country; })
      .entries(data);

// Add an SVG element for each city
  var chart = d3.select("#charts").append("svg")
      .attr("width", width + margin.left + margin.right)
      .attr("height", height + margin.top + margin.bottom)
    .append("g")
      .attr("transform", "translate(" + margin.left + "," + margin.top + ")");
  
  var country = chart.selectAll(".country")
      .data(countries)
    	.enter()  
  		.append("path")
      .attr("class", "line")
      .attr("d", function(d) {return line(d.values); })
  		.style("stroke", function (d) { 
        if (d.key == "New Zealand") {
          return "red";
        } else if (d.key == "United States") {
          return "orange";
        } else {
          return "lightgrey";
        };
      }); 
  
  country.filter(function(d){ 
    return d.key == "New Zealand" || d.key == "United States"; })
    .raise();

// Add a labels
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      .attr("y", height - 85)
      .style("text-anchor", "middle")
      .style("font-size", "12px")
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  		.text(function(d) { return d.key; });	
       
  svg.append("text")
  	.text(xScale.domain()[0])
      .attr("x", 0)
      .attr("y", height + 15)
      .style("text-anchor", "start")
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  //add axes
	chart.append("g")
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  chart.append("g")
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    .attr("transform", "translate(0," + height + ")")
    .call(xAxis);
  
	d3.selectAll("path.domain").remove();
	d3.selectAll("line").style("stroke", "silver");
	
});

function convertTextToNumbers(d) {
  d.Value = +d.Value;
  return d;
}

</script>

https://d3js.org/d3.v4.min.js