Bolivia 58.2 (2009) 44.7 (1999)
Bosnia and Herzegovina
56.2 (2007)
Botswana
63 (1993)
Brazil
56.7 (2005)
60.7 (1998)
Bulgaria
29.8 (2008)
26.4 (2001)
Burkina Faso
39.5 (2007)
48.2 (1994)
Burundi
42.4 (1998)
Cambodia
43 (2007 est.)
40 (2004 est.)
Cameroon
44.6 (2001)
47.7 (1996)
Canada
32.1 (2005)
31.5 (1994)