I saw this on GPS, the Fareed Zakaria show on CNN earlier today.
It's a fun little graph to play around with. I highlighted all the countries I've visited. Boy, WW1 and WW2 really made things bouncey in Europe! For some of the less-developed countries I've noticed that much of the data from the 1800s isn't very useful (maybe life expectancy wasn't recorded). But there are clearly inflection points where life expectancy dramatically increases. Why is that? Sewage systems or electricity or both introduced?
Play around with it!