Scientology
The Church of Scientology says that 13–15 million people are a part of the Church. Critics disagree with that figure, however. They say the organization probably does not have more than 100,000 followers, mostly in the United States.  They say that in 1960, there were probably 50,000 to 100,000 followers in the U.S. In the 1990s, a representative survey claimed there were only about 45,000 followers left. These figures seemed to have increased a bit, by 2004, where there were an estimated 55,000 followers.