| Gender | Year | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | |
| Total | 1,433 | 1,507 | 1,609 | 1,648 | 1,623 | 1,576 | 1,569 | 1,435 | 1,231 | 1,027 |
| Female | 377 | 399 | 417 | 419 | 404 | 406 | 383 | 368 | 321 | 278 |
| Male | 1,056 | 1,108 | 1,192 | 1,229 | 1,219 | 1,170 | 1,186 | 1,067 | 910 | 749 |
| Total (%) | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% |
| Female | 26.3% | 26.5% | 25.9% | 25.4% | 24.9% | 25.8% | 24.4% | 25.6% | 26.1% | 27.1% |
| Male | 73.7% | 73.5% | 74.1% | 74.6% | 75.1% | 74.2% | 75.6% | 74.4% | 73.9% | 72.9% |