The 2008 CIA World Factbook

by United States. Central Intelligence Agency

Saudi Arabia
$34.01 billion (31 December 2007 est.)

Senegal
$1.66 billion (31 December 2007 est.)

Serbia
$14.22 billion (2007 est.)

Seychelles
$40.8 million (31 December 2007 est.)

Singapore
$163 billion (31 December 2007 est.)

Slovakia
$18.98 billion (31 December 2007 est.)

Slovenia
$5.682 billion (30 September 2007 est.)

South Africa
$32.94 billion (31 December 2007)

Spain
$19.05 billion (31 December 2007 est.)

Sri Lanka
$3.644 billion (31 December 2007 est.)