The 2006 CIA World Factbook

by United States. Central Intelligence Agency

Russia
$84.25 billion (2005 est.)

Rwanda
$-166 million (2005 est.)

Samoa
$-2.428 million

Sao Tome and Principe
$-20 million (2005 est.)

Saudi Arabia
$90.73 billion (2005 est.)

Senegal
$-848 million (2005 est.)

Serbia
$-2.451 billion (2005 est.)

Seychelles
$-32 million (2005 est.)

Singapore
$32.74 billion (2005 est.)

Slovakia
$-4.066 billion (2005 est.)