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: 40.24 years
female: 43.35 years (2005 est.)
Jamaica
total: 27.25 years
male: 26.55 years
female: 27.97 years (2005 est.)
Japan
total: 42.64 years
male: 40.87 years
female: 44.44 years (2005 est.)
Jersey
total: 40.89 years
male: 40.13 years
female: 41.63 years (2005 est.)