| Gender | Year | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | |
| Total | 1,912 | 2,277 | 2,429 | 2,484 | 2,417 | 2,281 | 2,315 | 2,163 | 1,052 | 1,032 |
| Female | 1,069 | 1,332 | 1,400 | 1,425 | 1,326 | 1,283 | 1,310 | 1,192 | 630 | 635 |
| Male | 843 | 945 | 1,029 | 1,059 | 1,091 | 998 | 1,005 | 971 | 422 | 397 |
| Total (%) | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% |
| Female | 55.9% | 58.5% | 57.6% | 57.4% | 54.9% | 56.2% | 56.6% | 55.1% | 59.9% | 61.5% |
| Male | 44.1% | 41.5% | 42.4% | 42.6% | 45.1% | 43.8% | 43.4% | 44.9% | 40.1% | 38.5% |