I would agree, and I would like to do some research and get back to you.
I know that in Italy a few years ago you needed to be 16 before you could work in Milan. I don't know if that is still presently the case. There was a period of time when that was an issue because of some of the things that were happening in Milan. Some of the girls were 13, 14, and 15 years old, so they did put an age limit in. That is the only country that I'm aware of that has taken that initiative, but that was a direct reaction to some of the things that were happening there.
I would absolutely love to see that age raised, because I don't think that at 15 and 16 you really are equipped to deal with the things that come in travelling and living in foreign countries on your own, never mind modelling.