The 2004 CIA World Factbook

by United States. Central Intelligence Agency

Romania
5.4 billion cu m (2001 est.)

Russia
32.7 billion cu m (2001 est.)

Saudi Arabia
0 cu m (2001 est.)

Senegal
0 cu m (2001 est.)

Serbia and Montenegro
0 cu m (2001 est.)

Singapore
2.5 billion cu m
Note: from Indonesia and Malaysia (2001 est.)

Slovakia
7.205 billion cu m (2001 est.)

Slovenia
1.04 billion cu m (2001 est.)

South Africa
0 cu m (2001 est.)

Spain
17.26 billion cu m (2001 est.)