Historical population Year Pop. ±% 1951 4,178 — 1961 3,981 −4.7% 1971 30,705 +671.3% 1981 36,901 +20.2% 1991 44,967 +21.9% 2001 53,860 +19.8% 2011 66,245 +23.0% 2016 74,820 +12.9% Source: Statistics Norway