Size still matters - how big is market of Gold Companies?

I think it will be interesting to put some figures in perspective:

Credit default swaps market 45.5 trillion.
World stock market 51 trillion.
US stock market 21.9 trillion.
Mortgage securities market 7.1 trillion.
US treasuries market 4.4 trillion.
Google GOOG market cap 138 billion.
All 15 Gold/Silver mining companies in HUI Amex Gold Bugs Index 101 billion.