| Year | Pop. | ±% p.a. |
|---|
| 1793 | 6,740 | — |
|---|
| 1800 | 6,041 | −1.55% |
|---|
| 1806 | 7,314 | +3.24% |
|---|
| 1821 | 7,796 | +0.43% |
|---|
| 1831 | 7,918 | +0.16% |
|---|
| 1836 | 7,684 | −0.60% |
|---|
| 1841 | 8,565 | +2.19% |
|---|
| 1846 | 8,781 | +0.50% |
|---|
| 1851 | 9,410 | +1.39% |
|---|
| 1856 | 9,456 | +0.10% |
|---|
| 1861 | 9,862 | +0.84% |
|---|
| 1866 | 9,943 | +0.16% |
|---|
| 1872 | 10,701 | +1.23% |
|---|
| 1876 | 11,391 | +1.57% |
|---|
| 1881 | 12,373 | +1.67% |
|---|
| 1886 | 12,290 | −0.13% |
|---|
| 1891 | 12,610 | +0.52% |
|---|
| 1896 | 12,116 | −0.80% |
|---|
| | Year | Pop. | ±% p.a. |
|---|
| 1901 | 12,935 | +1.32% |
|---|
| 1906 | 13,133 | +0.30% |
|---|
| 1911 | 13,927 | +1.18% |
|---|
| 1921 | 13,152 | −0.57% |
|---|
| 1926 | 12,651 | −0.77% |
|---|
| 1931 | 14,101 | +2.19% |
|---|
| 1936 | 14,661 | +0.78% |
|---|
| 1946 | 15,568 | +0.60% |
|---|
| 1954 | 15,030 | −0.44% |
|---|
| 1962 | 15,924 | +0.72% |
|---|
| 1968 | 18,769 | +2.78% |
|---|
| 1975 | 20,942 | +1.58% |
|---|
| 1982 | 20,105 | −0.58% |
|---|
| 1990 | 19,144 | −0.61% |
|---|
| 1999 | 18,483 | −0.39% |
|---|
| 2007 | 18,075 | −0.28% |
|---|
| 2012 | 17,353 | −0.81% |
|---|
| 2017 | 17,291 | −0.07% |
|---|
|