The 2010 CIA World Factbook

by United States. Central Intelligence Agency

Portugal
$63.64 billion (31 December 2010 est.)
$63.64 billion (31 December 2009 est.)

Qatar
$19.49 billion (31 December 2010 est.)
$14.27 billion (31 December 2009 est.)

Romania
$1.831 billion (31 December 2010 est.)
$1.731 billion (31 December 2009 est.)

Russia
$260.5 billion (31 December 2010 est.)
$224.5 billion (31 December 2009 est.)

Saudi Arabia
$18 billion (31 December 2010 est.)
$11.41 billion (31 December 2009 est.)

Serbia
$NA

Singapore
$172.1 billion (31 December 2010 est.)
$167.4 billion (31 December 2009 est.)

Slovakia
$2.643 billion (31 December 2010 est.)
$2.743 billion (31 December 2009 est.)

Slovenia
$9.001 billion (31 December 2010 est.)
$7.901 billion (31 December 2009 est.)

South Africa
$53.38 billion (31 December 2010 est.)
$51.58 billion (31 December 2009 est.)