Your numbers are a decade old:
Mine are more representative of a trend, and are hardly all old, and the latest actually show less growth in RC numbers the US than mine from 2010: http://www.ncccusa.org/news/100204yearbook2010.html
But as substantiated, this does not support your assertion that this small RC growth is due to converts from Protestantism rather than Latin immigration, while historically evangelical churches have grown far more from converts from Catholicism seeking life, than the reverse.
http://www.peacebyjesus.com/RC-Stats_vs._Evang.html