Brunei
total: 27.5 years
male: 27.5 years
female: 27.5 years (2008 est.)
Bulgaria
total: 41.1 years
male: 38.9 years
female: 43.4 years (2008 est.)
Burkina Faso
total: 16.7 years
male: 16.5 years
female: 16.9 years (2008 est.)
Burma
total: 27.8 years
male: 27.2 years
female: 28.4 years (2008 est.)
Burundi
total: 16.7 years
male: 16.4 years
female: 17 years (2008 est.)
Cambodia
total: 21.7 years
male: 21 years
female: 22.5 years (2008 est.)
Cameroon
total: 19 years
male: 18.9 years
female: 19.2 years (2008 est.)
Canada
total: 40.1 years
male: 39 years
female: 41.2 years (2008 est.)
Cape Verde
total: 20.6 years
male: 19.9 years
female: 21.5 years (2008 est.)
Cayman Islands
total: 37.8 years
male: 37.4 years
female: 38.2 years (2008 est.)