| Year | Pop. | ±% p.a. |
|---|
| 1793 | 13,249 | — |
|---|
| 1800 | 13,509 | +0.28% |
|---|
| 1806 | 14,101 | +0.72% |
|---|
| 1821 | 13,697 | −0.19% |
|---|
| 1831 | 14,672 | +0.69% |
|---|
| 1836 | 15,231 | +0.75% |
|---|
| 1841 | 15,377 | +0.19% |
|---|
| 1846 | 17,110 | +2.16% |
|---|
| 1851 | 17,318 | +0.24% |
|---|
| 1856 | 18,069 | +0.85% |
|---|
| 1861 | 17,581 | −0.55% |
|---|
| 1866 | 19,890 | +2.50% |
|---|
| 1872 | 20,385 | +0.41% |
|---|
| 1876 | 21,774 | +1.66% |
|---|
| 1881 | 21,156 | −0.57% |
|---|
| 1886 | 21,721 | +0.53% |
|---|
| 1891 | 22,665 | +0.85% |
|---|
| 1896 | 22,215 | −0.40% |
|---|
| | Year | Pop. | ±% p.a. |
|---|
| 1901 | 22,340 | +0.11% |
|---|
| 1906 | 21,888 | −0.41% |
|---|
| 1911 | 21,990 | +0.09% |
|---|
| 1921 | 22,968 | +0.44% |
|---|
| 1926 | 23,306 | +0.29% |
|---|
| 1931 | 22,225 | −0.95% |
|---|
| 1936 | 22,369 | +0.13% |
|---|
| 1946 | 23,254 | +0.39% |
|---|
| 1954 | 24,441 | +0.62% |
|---|
| 1962 | 23,909 | −0.27% |
|---|
| 1968 | 25,979 | +1.39% |
|---|
| 1975 | 26,067 | +0.05% |
|---|
| 1982 | 25,159 | −0.51% |
|---|
| 1990 | 22,799 | −1.22% |
|---|
| 1999 | 21,892 | −0.45% |
|---|
| 2007 | 20,251 | −0.97% |
|---|
| 2012 | 18,959 | −1.31% |
|---|
| 2017 | 19,664 | +0.73% |
|---|
|