Line chart of world population over time. Data from the United Nations Population Estimates. This is example 36 from the screencast Splitting Charts.
MIT License
forked from curran's block: World Population Line Chart
https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.5/d3.min.js
https://cdnjs.cloudflare.com/ajax/libs/d3-legend/1.1.0/d3-legend.js