| Gender | Year | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | |
| Total | 144 | 171 | 124 | 193 | 260 | 286 | 303 | 265 | 209 | 242 |
| Female | 71 | 83 | 65 | 111 | 152 | 180 | 179 | 150 | 112 | 139 |
| Male | 73 | 88 | 59 | 82 | 108 | 106 | 124 | 115 | 97 | 103 |
| Total (%) | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% |
| Female | 49.3% | 48.5% | 52.4% | 57.5% | 58.5% | 62.9% | 59.1% | 56.6% | 53.6% | 57.4% |
| Male | 50.7% | 51.5% | 47.6% | 42.5% | 41.5% | 37.1% | 40.9% | 43.4% | 46.4% | 42.6% |