The 2008 CIA World Factbook

by United States. Central Intelligence Agency

Austria
5.4% of GDP (2005)

Azerbaijan
2.1% of GDP (2006)

Bahamas, The
3.6% of GDP (2000)

Bahrain
3.9% of GDP (1991)

Bangladesh
2.7% of GDP (2005)

Barbados
6.9% of GDP (2005)

Belarus
6.1% of GDP (2006)

Belgium
6% of GDP (2004)

Belize
5.3% of GDP (2004)

Benin
4.4% of GDP (2004)