The 2001 CIA World Factbook

by United States. Central Intelligence Agency

San Marino:
27,336 (July 2001 est.)

Sao Tome and Principe:
165,034 (July 2001 est.)

Saudi Arabia:
22,757,092

note: includes 5,360,526 non-nationals (July 2001 est.)

Senegal:
10,284,929 (July 2001 est.)

Seychelles:
79,715 (July 2001 est.)

Sierra Leone:
5,426,618 (July 2001 est.)

Singapore:
4,300,419 (July 2001 est.)

Slovakia:
5,414,937 (July 2001 est.)

Slovenia:
1,930,132 (July 2001 est.)