Do you have a link to that information? I'd like to see a breakdown by state.
Can’t remember where I found it first, but here are two I just Googled.
http://www.coolnurse.com/consent.htm
http://teenadvice.about.com/library/weekly/qanda/blageofconsentchart.htm
(If you Google, watch out. One of the sites Google returns pops up hard-core imagages.)