Bermuda
total: 41.6 years
male: 40.2 years
female: 43.1 years (2010 est.)
Bhutan
total: 24.3 years
male: 25 years
female: 23.7 years (2010 est.)
Bolivia
total: 22.2 years
male: 21.5 years
female: 22.9 years (2010 est.)
Bosnia and Herzegovina
total: 40.3 years
male: 39.1 years
female: 41.5 years (2010 est.)
Botswana
total: 22 years
male: 21.8 years
female: 22.1 years (2010 est.)
Brazil
total: 28.9 years
male: 28.1 years
female: 29.7 years (2010 est.)
British Virgin Islands
total: 32.6 years
male: 32.7 years
female: 32.5 years (2010 est.)
Brunei
total: 28.1 years
male: 28 years
female: 28.2 years (2010 est.)
Bulgaria
total: 41.6 years
male: 39.4 years
female: 43.9 years (2010 est.)
Burkina Faso
total: 16.8 years
male: 16.6 years
female: 17 years (2010 est.)