| Gender | Year | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | |
| Total | 1,299 | 1,482 | 1,819 | 2,108 | 2,042 | 2,062 | 1,910 | 1,703 | 1,532 | 1,453 |
| Female | 570 | 640 | 796 | 907 | 895 | 939 | 864 | 705 | 628 | 598 |
| Male | 729 | 842 | 1,023 | 1,201 | 1,147 | 1,123 | 1,046 | 998 | 904 | 855 |
| Total (%) | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% |
| Female | 43.9% | 43.2% | 43.8% | 43.0% | 43.8% | 45.5% | 45.2% | 41.4% | 41.0% | 41.2% |
| Male | 56.1% | 56.8% | 56.2% | 57.0% | 56.2% | 54.5% | 54.8% | 58.6% | 59.0% | 58.8% |