| Gender | Year | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | |
| Total | 9,757 | 12,044 | 13,911 | 14,887 | 13,027 | 12,629 | 12,665 | 12,732 | 12,482 | 12,213 |
| Female | 4,150 | 5,118 | 5,873 | 6,288 | 5,554 | 5,230 | 5,111 | 5,129 | 4,936 | 4,854 |
| Male | 5,607 | 6,926 | 8,038 | 8,599 | 7,473 | 7,399 | 7,554 | 7,603 | 7,546 | 7,359 |
| Total (%) | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% |
| Female | 42.5% | 42.5% | 42.2% | 42.2% | 42.6% | 41.4% | 40.4% | 40.3% | 39.5% | 39.7% |
| Male | 57.5% | 57.5% | 57.8% | 57.8% | 57.4% | 58.6% | 59.6% | 59.7% | 60.5% | 60.3% |