7 years
male: 18.34 years
female: 18.8 years (2005 est.)

Gambia, The
total: 17.59 years
male: 17.45 years
female: 17.74 years (2005 est.)

Gaza Strip
total: 15.65 years
male: 15.5 years
female: 15.81 years (2005 est.)

Georgia
total: 37.36 years
male: 34.93 years
female: 39.7 years (2005 est.)

Germany
total: 42.16 years
male: 40.88 years
female: 43.53 years (2005 est.)

Ghana
total: 20.45 years
male: 20.2 years
female: 20.7 years (2005 est.)

Gibraltar
total: 39.4 years
male: 39.12 years
female: 39.63 years (2005 est.)

Greece
total: 40.5 years
male: 39.39 years
female: 41.65 years (2005 est.)

Greenland
total: 33.83 years
male: 35.15 years
female: 32.14 years (2005 est.)

Grenada
total: 21.26 years
male: 21.73 years
female: 20.76 years (2005 est.)

Guadeloupe
total: 31.81 years
male: 30.91 years
female: 32.73 years (2005 est.)

Guam
total: 28.38 years
male: 28.16 years
female: 28.61 years (2005 est.)

Guatemala
total: 18.47 years
male: 18.25 years
female: 18.71 years (2005 est.)

Guernsey
total: 40.99 years
male: 40.03 years
female: 41.91 years (2005 est.)

Guinea
total: 17.67 years
male: 17.42 years
female: 17.93 years (2005 est.)

Guinea-Bissau
total: 18.97 years
male: 18.37 years
female: 19.57 years (2005 est.)

Guyana
total: 26.91 years
male: 26.44 years
female: 27.4 years (2005 est.)

Haiti
total: 18.03 years
male: 17.63 years
female: 18.44 years (2005 est.)

Honduras
total: 19.15 years
male: 18.75 years
female: 19.56 years (2005 est.)

Hong Kong
total: 39.4 years
male: 39.3 years
female: 39.6 years (2005 est.)

Hungary
total: 38.57 years
male: 36.1 years
female: 41.24 years (2005 est.)

Iceland
total: 34 years
male: 33.53 years
female: 34.49 years (2005 est.)

India
total: 24.66 years
male: 24.64 years
female: 24.67 years (2005 est.)

Indonesia
total: 26.48 years
male: 26.03 years
female: 26.93 years (2005 est.)

Iran
total: 24.23 years
male: 24.03 years
female: 24.44 years (2005 est.)

Iraq
total: 19.43 years
male: 19.35 years
female: 19.51 years (2005 est.)

Ireland
total: 33.7 years
male: 32.9 years
female: 34.49 years (2005 est.)

Israel
total: 29.39 years
male: 28.58 years
female: 30.27 years (2005 est.)

Italy
total: 41.77 years
male: 4