Actually I doubt if you are a "few years younger" than
Caroline Mae because she is only 16.
I actually don't think
Steven Levitt had very good data to show that
Amber actually had ever been really popular with upper class American parents. In my reading of the chapter in his book
Freakononmics, he jumped to a lot of conclusions about names automatically cycling "down the social scale" without giving enough supporting data. In spite of
Caroline Mae's personal experience, I think that on a national basis in the USA
Amber has probably always been a bit skewed toward blue collar families, at least since the novel and film
Ever Amber back in 1945.
Of course we also must remember that all of Levitt's data on this issue came from California and might not be completely applicable to other parts of the USA.