Some Old Data - the expectations in this table were surpassed and Muslim Population instead of 2 Billion was over 2.1 Billion in 2000 :D Allah Hu Akbar!
Muslims in Asia (1996) --> 1,022,692,000 (30%)
Muslims in Africa (1996) --> 426,282,000 (59%)
Total Number of Muslims on the Earth (1996) --> 1,482,596,925
Total Number of People on the Earth (1996) --> 5,771,939,007
Percentage of Muslims (1996) --> 26%
Islam annual growth rate (1994-1995) from U.N --> 6.40%
Christianity growth rate (1994-1995) from U.N --> 1.46%
Total Number of Muslims on the Earth (1998) --> 1,678,442,000
Expected Number of Muslims on the Earth (2000) --> 1,902,095,000
The table below shows the growth of Islam:
North America (1989-1998) --> 25%
Africa --> 2.15%
Asia --> 12.57%
Europe --> 142.35%
Latin America --> -4.73%
Australia --> 257.01%