| Gender | Year | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | |
| Total | 874 | 1,029 | 1,254 | 1,421 | 1,482 | 1,653 | 2,057 | 1,788 | 1,205 | 927 |
| Female | 545 | 639 | 780 | 870 | 890 | 1,012 | 1,227 | 1,063 | 714 | 562 |
| Male | 329 | 390 | 474 | 551 | 592 | 641 | 830 | 725 | 491 | 365 |
| Total (%) | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% |
| Female | 62.4% | 62.1% | 62.2% | 61.2% | 60.1% | 61.2% | 59.6% | 59.5% | 59.3% | 60.6% |
| Male | 37.6% | 37.9% | 37.8% | 38.8% | 39.9% | 38.8% | 40.4% | 40.5% | 40.7% | 39.4% |