http://i.imgur.com/cRzjXWQ.png
Sure you can point at some changes but you don't know what is causing them and when they're begin to peter off. We do know that a lot of the poverty fixes of late are almost exclusively linked to the fall of communism in Asia. Now they're all on market economies and we still have 1/3rd poverty and 1/2 living with under $2.50 a day.
Now we've eliminated communism, now what? The market approach has itself bottomed out and even wealthy states are struggling with late stage capitalism which is extremely low growth and rising unemployment and taxation unable to keep up with entitlements. On of the dirty little secrets of capitalism is that rich countries need poor countries to stay rich. You can't just raise everyone up. Limited resources will always mean uneven distributions, the same way economies don't naturally have an even distribution of money/resources.
Also one of the main reasons things are better today is become of liberalism in regards to abortion and the lowered population in especially hopeless areas in the 70s and 80s that led to starvation and resource warfare, thus these people aren't here anymore to pad poverty stats. They're dead. We shouldn't see that as a win for economic prosperity.