I don't understand what is being measured here. I think it is showing GDP by Purchasing Power Parity, but I don't understand why it says "average values of GDP". I'm not familiar with that term.

As someone who manages a non-profit, we do budget planning. You don’t need to give monthly. Giving comes in patterns, and it is simple enough to plan for it. Give in the way that is most convenient for you.

Thanks for giving at any intervals, though, it’s really important.