Brazil
total: 28.2 years
male: 27.5 years
female: 29 years (2006 est.)
British Virgin Islands
total: 31.4 years
male: 31.6 years
female: 31.2 years (2006 est.)
Brunei
total: 27.4 years
male: 28 years
female: 26.7 years (2006 est.)
Bulgaria
total: 40.8 years
male: 38.7 years
female: 42.9 years (2006 est.)
Burkina Faso
total: 16.5 years
male: 16.3 years
female: 16.7 years (2006 est.)
Burma
total: 27 years
male: 26.4 years
female: 27.6 years (2006 est.)
Burundi
total: 16.6 years
male: 16.4 years
female: 16.9 years (2006 est.)
Cambodia
total: 20.6 years
male: 19.9 years
female: 21.4 years (2006 est.)
Cameroon
total: 18.9 years
male: 18.7 years
female: 19 years (2006 est.)
Canada
total: 38.9 years
male: 37.8 years
female: 39.9 years (2006 est.)