workingon1

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

.arc text {
  font: 10px sans-serif;
  text-anchor: middle;
}

.arc path {
  stroke: #fff;
}

</style>
<svg width="960" height="500"></svg>
<script src="https://d3js.org/d3.v4.min.js"></script>
<script>

var svg = d3.select("svg"),
    width = +svg.attr("width"),
    height = +svg.attr("height"),
    radius = Math.min(width, height) / 2,
    g = svg.append("g").attr("transform", "translate(" + width / 2 + "," + height / 2 + ")");

var color = d3.scaleOrdinal(["#98abc5", "#8a89a6", "#7b6888", "#6b486b", "#a05d56", "#d0743c", "#ff8c00"]);

var pie = d3.pie()
    .sort(null)
    .value(function(d) { return d.total; });

var path = d3.arc()
    .outerRadius(radius - 10)
    .innerRadius(0);

var label = d3.arc()
    .outerRadius(radius - 40)
    .innerRadius(radius - 40);
/*
d3.csv("data.csv", function(d) {
  d.population = +d.population;
  return d;
}, function(error, data) {
  if (error) throw error;*/
/*  
d3.json("data.json", function(error, data) {
  data.forEach(function(d) {
   // d.leads_intended_storage_duration_tiers = (d.leads_intended_storage_duration_tiers);
    d.total = +d.total;
  });
  
*/

var arc = g.selectAll(".arc")
    .data(pie(data))
    .enter().append("g")
      .attr("class", "arc");

arc.append("path")
      .attr("d", path)
      .attr("fill", function(d) { return color(d.data.leads_intended_storage_duration_tiers); });

arc.append("text")
      .attr("transform", function(d) { return "translate(" + label.centroid(d) + ")"; })
      .attr("dy", "0.35em")
      .text(function(d) { return d.data.leads_intended_storage_duration_tiers; });
});

</script>

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