| Gender | Year | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | |
| Total | 236 | 342 | 464 | 487 | 536 | 421 | 331 | 290 | 233 | 226 |
| Female | 107 | 147 | 202 | 202 | 236 | 184 | 157 | 133 | 117 | 102 |
| Male | 129 | 195 | 262 | 285 | 300 | 237 | 174 | 157 | 116 | 124 |
| Total (%) | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% |
| Female | 45.3% | 43.0% | 43.5% | 41.5% | 44.0% | 43.7% | 47.4% | 45.9% | 50.2% | 45.1% |
| Male | 54.7% | 57.0% | 56.5% | 58.5% | 56.0% | 56.3% | 52.6% | 54.1% | 49.8% | 54.9% |