female: 43 years (2008 est.)

Guinea
total: 18.4 years
male: 18.2 years
female: 18.7 years (2008 est.)

Guinea-Bissau
total: 19.2 years
male: 18.6 years
female: 19.8 years (2008 est.)

Guyana
total: 28.2 years
male: 27.7 years
female: 28.7 years (2008 est.)

Haiti
total: 18.5 years
male: 18.1 years
female: 19 years (2008 est.)

Honduras
total: 20 years
male: 19.7 years
female: 20.4 years (2008 est.)

Hong Kong
total: 41.7 years
male: 41.4 years
female: 42 years (2008 est.)

Hungary
total: 39.1 years
male: 36.8 years
female: 41.8 years (2008 est.)

Iceland
total: 34.8 years
male: 34.4 years
female: 35.3 years (2008 est.)

India
total: 25.1 years
male: 24.7 years
female: 25.5 years (2008 est.)

Indonesia
total: 27.2 years
male: 26.7 years
female: 27.7 years (2008 est.)

Iran
total: 26.4 years
male: 26.2 years
female: 26.7 years (2008 est.)

Iraq
total: 20.2 years
male: 20.1 years
female: 20.2 years (2008 est.)

Ireland
total: 34.6 years
male: 33.9 years
female: 35.4 years (2008 est.)

Isle of Man
total: 40 years
male: 38.8 years
female: 41.3 years (2008 est.)

Israel
total: 28.9 years
male: 28.2 years
female: 29.7 years (2008 est.)

Italy
total: 42.9 years
male: 41.4 years
female: 44.4 years (2008 est.)

Jamaica
total: 23.4 years
male: 22.9 years
female: 24 years (2008 est.)

Japan
total: 43.8 years
male: 42.1 years
female: 45.7 years (2008 est.)

Jersey
total: 42.3 years
male: 41.6 years
female: 43.1 years (2008 est.)

Jordan
total: 23.9 years
male: 24.6 years
female: 23.2 years (2008 est.)

Kazakhstan
total: 29.3 years
male: 27.8 years
female: 31.1 years (2008 est.)

Kenya
total: 18.6 years
male: 18.5 years
female: 18.8 years (2008 est.)

Kiribati
total: 20.6 years
male: 20.1 years
female: 21.1 years (2008 est.)

Korea, North
total: 32.7 years
male: 31.2 years
female: 34.2 years (2008 est.)

Korea, South
total: 36.7 years
male: 35.5 years
female: 37.9 years (2008 est.)

Kuwait
total: 26.1 years
male: 28 years
female: 22.6 years (2008 est.)

Kyrgyzstan
total: 24.2 years
male: 23.3 years
female: 25 years (2008 est.)

Laos
total: 19.2 years
male: 18.9 years
female: 19.5 years (2008 est.)

Latvia
total: 39.9 years
male: 36.9 years
female: 43 year