| Year | Pop. | ±% p.a. |
|---|
| 1875 | 3,431 | — |
|---|
| 1890 | 4,098 | +1.19% |
|---|
| 1910 | 4,570 | +0.55% |
|---|
| 1925 | 3,414 | −1.93% |
|---|
| 1933 | 3,515 | +0.37% |
|---|
| 1939 | 3,846 | +1.51% |
|---|
| 1946 | 5,449 | +5.10% |
|---|
| 1950 | 5,077 | −1.75% |
|---|
| 1964 | 4,473 | −0.90% |
|---|
| 1971 | 4,395 | −0.25% |
|---|
| 1981 | 6,384 | +3.80% |
|---|
| 1985 | 6,073 | −1.24% |
|---|
| 1989 | 5,676 | −1.68% |
|---|
| 1990 | 5,582 | −1.66% |
|---|
| 1991 | 6,103 | +9.33% |
|---|
| 1992 | 4,853 | −20.48% |
|---|
| 1993 | 6,189 | +27.53% |
|---|
| 1994 | 6,137 | −0.84% |
|---|
| 1995 | 6,377 | +3.91% |
|---|
| 1996 | 6,468 | +1.43% |
|---|
| | Year | Pop. | ±% p.a. |
|---|
| 1997 | 6,568 | +1.55% |
|---|
| 1998 | 5,689 | −13.38% |
|---|
| 1999 | 5,549 | −2.46% |
|---|
| 2000 | 5,478 | −1.28% |
|---|
| 2001 | 5,266 | −3.87% |
|---|
| 2002 | 5,375 | +2.07% |
|---|
| 2003 | 5,277 | −1.82% |
|---|
| 2004 | 5,414 | +2.60% |
|---|
| 2005 | 5,033 | −7.04% |
|---|
| 2006 | 4,971 | −1.23% |
|---|
| 2007 | 4,866 | −2.11% |
|---|
| 2008 | 4,792 | −1.52% |
|---|
| 2009 | 4,684 | −2.25% |
|---|
| 2010 | 4,597 | −1.86% |
|---|
| 2011 | 4,500 | −2.11% |
|---|
| 2012 | 4,420 | −1.78% |
|---|
| 2013 | 4,449 | +0.66% |
|---|
| 2014 | 4,369 | −1.80% |
|---|
| 2015 | 4,445 | +1.74% |
|---|
| 2016 | 4,400 | −1.01% |
|---|
|