Well I'm muslim and my family is quite big (mshAllah) 5 girls, and 1 boy

The world's fastest growing religion is Christianity and that has been generally so since 50 AD. The growth of Christianity in East Asia for example outpaces the growth of other faiths by a large margin. Having said that, this fact is insignificant to the truth or non-truth a particular faith spreads.

Catholics make up only about 1/3 of Christians. Most Christians are Protestant.

I just learned that Muslims that transplant themselves in western countries are becoming Christian at a faster clip than any other faith conversion. That also does not speak to the truth or non-truth of a faith. It is just interesting.