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)

Central African Republic
61.3 (1993)

Chile
56.7 (2000)

China
40 (2001)

Colombia
57.1 (1996)