I read the National Vital Statistics Report he linked to and found the birth rates for girls ages 15-17 for tbe most recent year available (2006):
Births to 15-17 year old girls per 1,000
Mexican Americans 53.9
Now, I'd rather see teen births than abortions, but still. Slummy behavior is sometimes referred to as "ghetto." Maybe it's time to say, "That is SO barrio!"