World Muslim population doubling, report projects

Twenty years ago there were 1.1 billion Muslims, that digit has been doubled to this day. If the birthrate continues this way Pakistan will have more Muslims that Indonesia, with 256 million and in all countries the digit will doubled, also with some rate of conversion this digit could be even bigger. Although people are saying that the raise of people in the last 20 years is going to be less that in these following 20 years because Muslims lines are flattening out.

http://religion.blogs.cnn.com/2011/01/27/world-muslim-population-doubling-report-projects/?iref=allsearch