In the new issue of Computer Gaming World they have an interesting article about how many games are rated what. The news may shock some of you. This was originally in an issue of PSM by John Davison.
These stats are for every rated game released in 2003 as per the article. I assume they got the info from the ESRB since they interviewed them.

E-rated games 57%
T-rated games 32%
M-rated games 10%
EC accounted for 1%


Let's hear some thoughts on this.