Nepal
total: 20.07 years
male: 19.91 years
female: 20.24 years (2005 est.)
Netherlands
total: 39.04 years
male: 38.22 years
female: 39.9 years (2005 est.)
Netherlands Antilles
total: 32.46 years
male: 30.86 years
female: 34.01 years (2005 est.)
New Caledonia
total: 27.5 years
male: 27.16 years
female: 27.84 years (2005 est.)
New Zealand
total: 33.65 years
male: 32.92 years
female: 34.4 years (2005 est.)
Nicaragua
total: 20.56 years
male: 20.15 years
female: 20.98 years (2005 est.)
Niger
total: 16.25 years
male: 15.8 years
female: 16.72 years (2005 est.)
Nigeria
total: 18.63 years
male: 18.71 years
female: 18.55 years (2005 est.)
Northern Mariana Islands
total: 29.33 years
male: 31.54 years
female: 28.33 years (2005 est.)
Norway
total: 38.17 years
male: 37.29 years
female: 39.07 years (2005 est.)