year population
1851     2.436
1861     3.230
1871     3.689
1881     4.325
1891     4.833
1901     5.371
1911     7.207
1921     8.788
1931    10.377
1941    11.507
1951    13.648
1961    17.780
1971    21.046
1981    23.774
1991    26.429
