| Year | Pop. | ±% p.a. |
|---|
| 1793 | 5,742 | — |
|---|
| 1800 | 6,473 | +1.73% |
|---|
| 1806 | 6,997 | +1.31% |
|---|
| 1821 | 8,837 | +1.57% |
|---|
| 1831 | 9,285 | +0.50% |
|---|
| 1836 | 9,972 | +1.44% |
|---|
| 1841 | 9,471 | −1.03% |
|---|
| 1846 | 9,958 | +1.01% |
|---|
| 1851 | 10,869 | +1.77% |
|---|
| 1856 | 11,219 | +0.64% |
|---|
| 1861 | 11,257 | +0.07% |
|---|
| 1866 | 11,524 | +0.47% |
|---|
| 1872 | 12,674 | +1.60% |
|---|
| 1876 | 12,923 | +0.49% |
|---|
| 1881 | 13,806 | +1.33% |
|---|
| 1886 | 14,733 | +1.31% |
|---|
| 1891 | 16,545 | +2.35% |
|---|
| 1896 | 16,702 | +0.19% |
|---|
| | Year | Pop. | ±% p.a. |
|---|
| 1901 | 17,140 | +0.52% |
|---|
| 1906 | 17,622 | +0.56% |
|---|
| 1911 | 17,201 | −0.48% |
|---|
| 1921 | 17,054 | −0.09% |
|---|
| 1926 | 17,596 | +0.63% |
|---|
| 1931 | 18,957 | +1.50% |
|---|
| 1936 | 19,489 | +0.56% |
|---|
| 1946 | 22,171 | +1.30% |
|---|
| 1954 | 22,559 | +0.22% |
|---|
| 1962 | 26,377 | +1.97% |
|---|
| 1968 | 31,545 | +3.03% |
|---|
| 1975 | 33,030 | +0.66% |
|---|
| 1982 | 33,152 | +0.05% |
|---|
| 1990 | 32,734 | −0.16% |
|---|
| 1999 | 32,667 | −0.02% |
|---|
| 2007 | 33,234 | +0.22% |
|---|
| 2012 | 33,701 | +0.28% |
|---|
| 2017 | 33,160 | −0.32% |
|---|
|