Interesting quote: "A study done by the Graduate Center of the City University of New York found that the percentage of the population that describes itself as "nonreligious" more than doubled from 1990 to 2001, from 14.3 million to 29.4 million people. The only other group to show growth was Muslims." http://www.dfw.com/mld/dfw/living/religion/14121950.htm