Netherlands
total: 40.4 years
male: 39.6 years
female: 41.2 years (2009 est.)
Netherlands Antilles
total: 33.7 years
male: 31.9 years
female: 35.5 years (2009 est.)
New Caledonia
total: 28.7 years
male: 28.2 years
female: 29.2 years (2009 est.)
New Zealand
total: 36.6 years
male: 35.8 years
female: 37.4 years (2009 est.)
Nicaragua
total: 22.1 years
male: 21.7 years
female: 22.5 years (2009 est.)
Niger
total: 15.2 years
male: 14.9 years
female: 15.4 years (2009 est.)
Nigeria
total: 19 years
male: 18.9 years
female: 19.1 years (2009 est.)
Northern Mariana Islands
total: 30.1 years
male: 32.1 years
female: 29.2 years (2009 est.)
Norway
total: 39.4 years
male: 38.5 years
female: 40.2 years (2009 est.)
Oman
total: 18.8 years
male: 21.1 years
female: 16.7 years (2009 est.)