| Gender | Year | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | |
| Total | 36,951 | 39,958 | 42,219 | 44,262 | 45,475 | 45,290 | 46,106 | 47,039 | 48,677 | 50,624 |
| Female | 15,684 | 16,902 | 17,890 | 18,699 | 19,269 | 19,117 | 19,296 | 19,637 | 20,281 | 20,909 |
| Male | 21,267 | 23,056 | 24,329 | 25,563 | 26,206 | 26,173 | 26,810 | 27,402 | 28,396 | 29,715 |
| Total (%) | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% |
| Female | 42.4% | 42.3% | 42.4% | 42.2% | 42.4% | 42.2% | 41.9% | 41.7% | 41.7% | 41.3% |
| Male | 57.6% | 57.7% | 57.6% | 57.8% | 57.6% | 57.8% | 58.1% | 58.3% | 58.3% | 58.7% |