This visualisation is a based on a recreation by Mike Bostock of Gapminder’s Wealth & Health of Nations. As originally described, it shows the dynamic fluctuation in per-capita income (x), life expectancy (y) and population (radius) of 180 nations over the last [two centuries]. Nations are colored by geographic region; mouseover to read their names.
The views of three countries are highlighted - Bangladesh, India and China.
At the time of writing (late October, 2013), generating this sort of chart for use in a web page still requires a certain amount of technical skill:
Source: Tony Hirst, Pete Mitton, Mike Bostock, Tom Carden, Gapminder.