| Year | Pop. | ±% p.a. |
|---|
| 1793 | 4,726 | — |
|---|
| 1800 | 5,360 | +1.81% |
|---|
| 1806 | 5,570 | +0.64% |
|---|
| 1821 | 5,544 | −0.03% |
|---|
| 1831 | 5,543 | −0.00% |
|---|
| 1836 | 4,995 | −2.06% |
|---|
| 1841 | 5,311 | +1.23% |
|---|
| 1846 | 5,684 | +1.37% |
|---|
| 1851 | 5,073 | −2.25% |
|---|
| 1856 | 5,897 | +3.06% |
|---|
| 1861 | 5,936 | +0.13% |
|---|
| 1866 | 5,919 | −0.06% |
|---|
| 1872 | 6,124 | +0.57% |
|---|
| 1876 | 6,136 | +0.05% |
|---|
| 1881 | 5,775 | −1.21% |
|---|
| 1886 | 5,450 | −1.15% |
|---|
| 1891 | 5,572 | +0.44% |
|---|
| 1896 | 5,265 | −1.13% |
|---|
| 1901 | 5,098 | −0.64% |
|---|
| | Year | Pop. | ±% p.a. |
|---|
| 1906 | 5,017 | −0.32% |
|---|
| 1911 | 4,853 | −0.66% |
|---|
| 1921 | 5,036 | +0.37% |
|---|
| 1926 | 4,989 | −0.19% |
|---|
| 1931 | 5,661 | +2.56% |
|---|
| 1936 | 5,635 | −0.09% |
|---|
| 1946 | 6,734 | +1.80% |
|---|
| 1954 | 7,750 | +1.77% |
|---|
| 1962 | 10,080 | +3.34% |
|---|
| 1968 | 16,281 | +8.32% |
|---|
| 1975 | 19,150 | +2.35% |
|---|
| 1982 | 18,760 | −0.29% |
|---|
| 1990 | 19,107 | +0.23% |
|---|
| 1999 | 19,603 | +0.29% |
|---|
| 2006 | 21,162 | +1.10% |
|---|
| 2011 | 22,316 | +1.07% |
|---|
| 2017 | 22,333 | +0.01% |
|---|
| 2019 | 22,528 | +0.44% |
|---|
|