| Year |
Inhabitants |
| 1821 |
4,358 |
| 1848 |
4,679 |
| 1871 |
6,132 |
| 1885 |
7,630 |
| 1905 |
11,568 |
| 1925 |
14,164 |
|
| Year |
Inhabitants |
| 1933 |
14,744 |
| 1939 |
16,686 |
| 1946 |
27,417 |
| 1950 |
29,901 |
| 1956 |
26,487 |
|
| Year |
Inhabitants |
| 1961 |
25,946 |
| 1968 |
26,256 |
| 1970 |
25,334 |
| 1975 |
25,780 |
| 1980 |
24,924 |
|
| Year |
Inhabitants |
| 1985 |
23,662 |
| 1990 |
23,882 |
| 1995 |
23,599 |
| 2000 |
23,100 |
| 2005 |
22,734 |
| 2010 |
21,891 |
|