years (2005 est.)

Barbados
total: 34.15 years
male: 32.99 years
female: 35.28 years (2005 est.)

Belarus
total: 37.03 years
male: 34.32 years
female: 39.7 years (2005 est.)

Belgium
total: 40.55 years
male: 39.29 years
female: 41.81 years (2005 est.)

Belize
total: 19.35 years
male: 19.21 years
female: 19.49 years (2005 est.)

Benin
total: 16.56 years
male: 16.12 years
female: 17.01 years (2005 est.)

Bermuda
total: 39.76 years
male: 38.78 years
female: 40.58 years (2005 est.)

Bhutan
total: 20.27 years
male: 20.11 years
female: 20.44 years (2005 est.)

Bolivia
total: 21.47 years
male: 20.79 years
female: 22.17 years (2005 est.)

Bosnia and Herzegovina
total: 36.21 years
male: 35.81 years
female: 36.63 years (2005 est.)

Botswana
total: 19.29 years
male: 18.64 years
female: 19.93 years (2005 est.)

Brazil
total: 27.81 years
male: 27.06 years
female: 28.57 years (2005 est.)

British Virgin Islands
total: 30.9 years
male: 31.1 years
female: 30.7 years (2005 est.)

Brunei
total: 27.04 years
male: 27.63 years
female: 26.4 years (2005 est.)

Bulgaria
total: 40.66 years
male: 38.59 years
female: 42.66 years (2005 est.)

Burkina Faso
total: 16.82 years
male: 16.43 years
female: 17.22 years (2005 est.)

Burma
total: 26.14 years
male: 25.57 years
female: 26.72 years (2005 est.)

Burundi
total: 16.6 years
male: 16.27 years
female: 16.95 years (2005 est.)

Cambodia
total: 19.91 years
male: 19.16 years
female: 20.79 years (2005 est.)

Cameroon
total: 18.6 years
male: 18.45 years
female: 18.76 years (2005 est.)

Canada
total: 38.54 years
male: 37.54 years
female: 39.56 years (2005 est.)

Cape Verde
total: 19.4 years
male: 18.62 years
female: 20.25 years (2005 est.)

Cayman Islands
total: 36.83 years
male: 36.48 years
female: 37.18 years (2005 est.)

Central African Republic
total: 18.12 years
male: 17.75 years
female: 18.5 years (2005 est.)

Chad
total: 16.02 years
male: 15.32 years
female: 16.71 years (2005 est.)

Chile
total: 30.07 years
male: 29.17 years
female: 31.05 years (2005 est.)

China
total: 32.26 years
male: 31.87 years
female: 32.67 years (2005 est.)

Colombia
total: 26.04 years
male: 25.14 years
female: 26.93 years (2005 est.)

Comoros
total: 18.61 years