Historical population Year Pop. ±% 1869 7,868 — 1880 8,051 +2.3% 1890 8,584 +6.6% 1900 10,410 +21.3% 1910 11,958 +14.9% 1923 11,339 −5.2% 1934 11,526 +1.6% 1939 13,924 +20.8% 1951 11,336 −18.6% 1961 11,996 +5.8% 1971 12,852 +7.1% 1981 12,679 −1.3% 1991 13,608 +7.3% 2001 14,452 +6.2% 2011 15,657 +8.3%