JS Bin // source https://jsbin.com/nipefeb

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title>JS Bin</title>
  <script src="https://d3js.org/d3.v5.min.js"></script>
<style id="jsbin-css">
.Asia {
  fill: #FF265C
}
.Europe {
  fill: #FFE700
}
.Africa {
  fill: #4ED7E9
}
.Americas {
  fill: #70ED02
}
.Oceania {
  fill: purple
}

.tick line {
  stroke: #DDEAED
}

.tick text {
  color: #878787;
  font-size: 14px
}

#year {
  font-size: 300px;
  text-anchor: middle;
  fill: #DADADA;
  letter-spacing: 40px;
}
</style>
</head>
<body>
  <h1>A bubble chart with D3</h1>

var svg = d3.select("svg");

//D3 margin convention, see https://bl.ocks.org/mbostock/3019563
var margin = { top: 20, right: 10, bottom: 20, left: 10 };

var width = 800 - margin.left - margin.right;
var height = 600 - margin.top - margin.bottom;

var svg = d3.select("body").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 dataUrl = "https://docs.google.com/spreadsheets/d/e/2PACX-1vRpzJYEJv9hkwx3ZLaimdpZmrHK_hyPGXlAho_BaM2p_qsWRygvorbif1KvyPP_k0mt6j04vIL0ANUT/pub?gid=43247911&single=true&output=csv";

d3.csv(dataUrl).then(function (data) {
  data.forEach(function (d) {
    d.income = +d.income;
    d.lifeexp = +d.lifeexp;
    d.population = +d.population;
  });
  var maxpop = d3.max(data, function (d) {
    return d.population;
  });

data.sort(function (a, b) {
    return b.population - a.population;
  });

svg.append("text").attr("x", width / 2).attr("y", height * 2 / 3).text("2018").attr("id", "year");

var xScale = d3.scaleLog().domain([400, 100000]).range([0, width]);
  var yScale = d3.scaleLinear().domain([15, 90]).range([height, 0]);
  var rScale = d3.scaleSqrt().domain([0, maxpop]).range([0, 50]);

var yAxis = d3.axisLeft(yScale).tickSizeInner(-width);
  svg.append("g").attr("transform", "translate(10,0)").call(yAxis);

var xAxis = d3.axisBottom(xScale).tickValues([500, 1000, 2000, 4000, 8000, 16000, 32000, 64000]).tickFormat(d3.format(".1s")).tickSizeInner(-height);
  svg.append("g").attr("transform", "translate(10," + height + ")").call(xAxis);

var colors = ["#FF265C", "#FFE700", "#4ED7E9", "#70ED02", "purple"];
  var colorScale = d3.scaleOrdinal().domain(["Asia", "Europe", "Africa", "Americas", "Oceania"]).range(colors);

svg.selectAll("circle").data(data).enter().append("circle")
  //.attr("class", (d) => d.continent)
  .attr("cx", function (d) {
    return xScale(d.income);
  }).attr("cy", function (d) {
    return yScale(d.lifeexp);
  }).attr("r", function (d) {
    return rScale(d.population);
  }).style("fill", function (d) {
    return colorScale(d.continent);
  }).style("stroke", "black");
});
</script>

.tick line {
  stroke: #DDEAED
}

.tick text {
  color: #878787;
  font-size: 14px
}

#year {
  font-size: 300px;
  text-anchor: middle;
  fill: #DADADA;
  letter-spacing: 40px;
}
</script>

//D3 margin convention, see https://bl.ocks.org/mbostock/3019563
var margin = {top: 20, right: 10, bottom: 20, left: 10};

var width = 800 - margin.left - margin.right;
var height = 600 - margin.top - margin.bottom;

var svg = d3.select("body").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 dataUrl = "https://docs.google.com/spreadsheets/d/e/2PACX-1vRpzJYEJv9hkwx3ZLaimdpZmrHK_hyPGXlAho_BaM2p_qsWRygvorbif1KvyPP_k0mt6j04vIL0ANUT/pub?gid=43247911&single=true&output=csv"

d3.csv(dataUrl).then(function(data){
  data.forEach(function(d){
    d.income = +d.income;
    d.lifeexp = +d.lifeexp;
    d.population = +d.population;
  })
  var maxpop = d3.max(data, function(d){return d.population;});
  
  data.sort(function(a,b){
    return b.population - a.population;
  })
  
  svg.append("text")
    .attr("x", width/2)
    .attr("y", height*2/3)
    .text("2018")
    .attr("id", "year");
  
  var xScale = d3.scaleLog()
    .domain([400,100000])
    .range([0,width]);
  var yScale = d3.scaleLinear()
    .domain([15,90])
    .range([height,0]);
  var rScale = d3.scaleSqrt()
    .domain([0, maxpop])
    .range([0,50]);
  
  var yAxis = d3.axisLeft(yScale)
    .tickSizeInner(-width);
  svg.append("g")
    .attr("transform", "translate(10,0)")
    .call(yAxis);
  
  var xAxis = d3.axisBottom(xScale)
    .tickValues([500, 1000, 2000, 4000, 8000, 16000, 32000, 64000])
    .tickFormat(d3.format(".1s"))
    .tickSizeInner(-height);
  svg.append("g")
    .attr("transform", `translate(10,${height})`)
    .call(xAxis);
  
  var colors =["#FF265C", "#FFE700", "#4ED7E9", "#70ED02", "purple"];
  var colorScale = d3.scaleOrdinal()
    .domain(["Asia", "Europe", "Africa", "Americas", "Oceania"])
    .range(colors);
  
  svg.selectAll("circle")
    .data(data)
    .enter()
    .append("circle")
    //.attr("class", (d) => d.continent)
    .attr("cx", (d) => xScale(d.income))
    .attr("cy", (d) => yScale(d.lifeexp))
    .attr("r", (d) => rScale(d.population))
    .style("fill", (d) => colorScale(d.continent))
    .style("stroke", "black");
  
});
</script></body>
</html>

https://d3js.org/d3.v5.min.js