Andrew Walden has this report in the Pajamas Media. It quotes these statistics:
. . . Islam used to represent … Africa’s main religion and there were 30 African languages that used to be written in Arabic script. The number of Muslims in Africa has diminished to 316 million, half of whom are Arabs in North Africa. So in the section of Africa that we are talking about, the non-Arab section, the number of Muslims does not exceed 150 million people. When we realize that the entire population of Africa is one billion people, we see that the number of Muslims has diminished greatly from what it was in the beginning of the last century.
On the other hand, the number of Catholics has increased from one million in 1902 to 329 million 882 thousand (329,882,000). Let us round off that number to 330 million in the year 2000.
As to how that happened, well there are now 1.5 million churches whose congregations account for 46 million people. In every hour, 667 Muslims convert to Christianity. Everyday, 16,000 Muslims convert to Christianity. Every year, 6 million Muslims convert to Christianity. These numbers are very large indeed . . .
Its [ie. Islam's] claim to be the world’s fastest-growing religion stems mostly from the high birth rate in Islamic countries, whose infant mortality rates have been cut by the introduction of Western medicine. Christian growth is based on adult conversion.
