| Gender | Year | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | |
| Total | 2,414 | 2,525 | 2,478 | 2,421 | 2,257 | 2,055 | 1,808 | 1,588 | 1,332 | 1,327 |
| Female | 498 | 504 | 526 | 493 | 441 | 429 | 406 | 365 | 310 | 314 |
| Male | 1,916 | 2,021 | 1,952 | 1,928 | 1,816 | 1,626 | 1,402 | 1,223 | 1,022 | 1,013 |
| Total (%) | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% |
| Female | 20.6% | 20.0% | 21.2% | 20.4% | 19.5% | 20.9% | 22.5% | 23.0% | 23.3% | 23.7% |
| Male | 79.4% | 80.0% | 78.8% | 79.6% | 80.5% | 79.1% | 77.5% | 77.0% | 76.7% | 76.3% |