| Year | Pop. | ±% p.a. |
|---|
| 1793 | 5,500 | — |
|---|
| 1800 | 6,111 | +1.52% |
|---|
| 1806 | 6,818 | +1.84% |
|---|
| 1821 | 6,992 | +0.17% |
|---|
| 1831 | 6,622 | −0.54% |
|---|
| 1836 | 6,846 | +0.67% |
|---|
| 1841 | 8,950 | +5.51% |
|---|
| 1846 | 9,151 | +0.45% |
|---|
| 1851 | 10,395 | +2.58% |
|---|
| 1856 | 10,312 | −0.16% |
|---|
| 1861 | 11,170 | +1.61% |
|---|
| 1866 | 11,408 | +0.42% |
|---|
| 1872 | 11,130 | −0.41% |
|---|
| 1876 | 11,241 | +0.25% |
|---|
| 1881 | 12,145 | +1.56% |
|---|
| 1886 | 12,564 | +0.68% |
|---|
| 1891 | 12,792 | +0.36% |
|---|
| 1896 | 13,641 | +1.29% |
|---|
| | Year | Pop. | ±% p.a. |
|---|
| 1901 | 13,059 | −0.87% |
|---|
| 1906 | 13,908 | +1.27% |
|---|
| 1911 | 14,861 | +1.33% |
|---|
| 1921 | 14,657 | −0.14% |
|---|
| 1926 | 15,928 | +1.68% |
|---|
| 1931 | 16,356 | +0.53% |
|---|
| 1936 | 17,499 | +1.36% |
|---|
| 1946 | 17,573 | +0.04% |
|---|
| 1954 | 20,219 | +1.77% |
|---|
| 1962 | 26,873 | +3.62% |
|---|
| 1968 | 34,518 | +4.26% |
|---|
| 1975 | 37,712 | +1.27% |
|---|
| 1982 | 35,005 | −1.06% |
|---|
| 1990 | 35,319 | +0.11% |
|---|
| 1999 | 35,695 | +0.12% |
|---|
| 2007 | 37,835 | +0.73% |
|---|
| 2012 | 40,503 | +1.37% |
|---|
| 2017 | 40,032 | −0.23% |
|---|
|