India
total: 24.1 years
male: 24.1 years
female: 24.2 years (2002)
Indonesia
total: 25.8 years
male: 25.4 years
female: 26.2 years (2002)
Iran
total: 22.9 years
male: 22.7 years
female: 23.2 years (2002)
Iraq
total: 19 years
male: 18.9 years
female: 19.1 years (2002)
Ireland
total: 33.1 years
male: 32.2 years
female: 34 years (2002)
Israel
total: 28.9 years
male: 28.1 years
female: 29.8 years (2002)
Italy
total: 41 years
male: 39.4 years
female: 42.6 years (2002)
Jamaica
total: 26.5 years
male: 25.8 years
female: 27.2 years (2002)
Japan
total: 42 years
male: 40.3 years
female: 43.8 years (2002)
Jersey
total: 39.8 years
male: 39.1 years
female: 40.6 years (2002)