The CIA Factbook cites the 2010 estimate for GDP at $74.48 trillion:

https://www.cia.gov/library/publications/the-world-factbook/...

Also of interest, another number close to this is the world's stock of broad money, at around $75.86 trillion. Because this is comprised of all money in circulation, plus the total quantity of money in money market funds, credit union deposits, and other liquid assets, the top end of what is being asked for is almost literally, all of the money in the world.

> the top end of what is being asked for is almost literally, all of the money in the world.

LOL, now THAT is awesome. The RIAA would be the perfect villain if they weren't so ridiculous.

I wish that's how the RIAA did the calculation.

Judge: "What are the damages?"

RIAA: "How much money is there in the world? We'll start with that. No, seriously."

may be RIAA is from the future ("Austin Powers")