Albania
26.7 (2005)

Algeria
35.3 (1995)

Argentina
49 (2006)

Armenia
37 (2006)

Australia
30.5 (2006)

Austria
26 (2005)

Azerbaijan
36.5 (2001)

Bangladesh
33.4 (2000)

Belarus
29.7 (2002)

Belgium
28 (2005)