Percentage of humans with a class

Gary Gygax's Dungeon Masters Guide notes that only 1 in 100 humans has a class. 99 in 100 humans are 0-level humans.

I seem to remember James writing somewhere (in a product? on his blog?) that his campaign world has even fewer classed humans. Can anyone point me to the quote?

Last edited by Geoffrey (2011-06-03 20:50:20)