This is nice. Go to Gapminder.org, scroll down to Has the world become a better place?, and listen and watch the animated graph.
I don’t know if Gapminder.org means to imply that the world has become a better place because women have fewer children. Lower infant mortality is a good thing, but it is not obviously true that fewer children are better than more children. Fewer children and negative population growth in Russia, Ukraine and Bulgaria are not signs of progress.
Unfortunately, apart from a few nice samples, Gapminder.org doesn’t seem to be doing much. There is not much data available. Too bad.
A much richer data set can be found on NationMaster. What we need is a (more stable) Gapminder interface for NationMaster’s data.