Can you please remove ripple from coinmarketcap. They've issued 20billion more coins out of thin air, just to move up to #3 position, this is just pathetic.
They actually have close to 100 billion XRP issued, check out
http://coinmarketcap.com/currencies/views/market-cap-by-total-supply/.
The question is what is considered "available supply". There are ~71 billion XRP held by Ripple Labs, less than 20 billion held by Chris, Jed and Arthur (aka. "the founders") and probably(?) some 9-10 billion held by others. Earlier Ripple Labs only reported the amount of XRP they distributed from the 80 initial billion they got, now they report their share of all 100 XRP in existence.
Both amounts are a bit weird - the founders have contracts that state they can't sell/dump at will, then again Ripple Labs might also sell at any time. The current number is probably a bit too high (if you interpret "available" as meanining "distributed to the community"), then again it's a good metric as any...