| Gender | Year | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | |
| Total | 70 | 65 | 71 | 102 | 132 | 140 | 127 | 139 | 149 | 183 |
| Female | 28 | 35 | 25 | 47 | 62 | 54 | 52 | 64 | 65 | 74 |
| Male | 42 | 30 | 46 | 55 | 70 | 86 | 75 | 75 | 84 | 109 |
| Total (%) | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% |
| Female | 40.0% | 53.8% | 35.2% | 46.1% | 47.0% | 38.6% | 40.9% | 46.0% | 43.6% | 40.4% |
| Male | 60.0% | 46.2% | 64.8% | 53.9% | 53.0% | 61.4% | 59.1% | 54.0% | 56.4% | 59.6% |