Belarus
21.7 (1998)

Belgium
28.7 (1996)

Bolivia
58.9 (1997)

Brazil
60.7 (1998)

Bulgaria
26.4 (2001)

Burkina Faso
48.2 (1994)

Burundi
42.5 (1998)

Cambodia
40.4 (1997)

Cameroon
47.7 (1996)

Canada
31.5 (1994)