Netherlands
total: 39.4 years
male: 38.6 years
female: 40.2 years (2006 est.)
Netherlands Antilles
total: 32.8 years
male: 31.1 years
female: 34.4 years (2006 est.)
New Caledonia
total: 27.8 years
male: 27.4 years
female: 28.2 years (2006 est.)
New Zealand
total: 33.9 years
male: 33.2 years
female: 34.7 years (2006 est.)
Nicaragua
total: 20.9 years
male: 20.5 years
female: 21.4 years (2006 est.)
Niger
total: 16.5 years
male: 16.5 years
female: 16.4 years (2006 est.)
Nigeria
total: 18.7 years
male: 18.7 years
female: 18.6 years (2006 est.)
Northern Mariana Islands
total: 29.5 years
male: 31.7 years
female: 28.5 years (2006 est.)
Norway
total: 38.4 years
male: 37.6 years
female: 39.3 years (2006 est.)
Oman
total: 19 years
male: 21.7 years
female: 16.5 years (2006 est.)