| Gender | Year | |||||||||
| 1993 | 1994 | 1995 | 1996 | 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | |
| Total | 23,497 | 25,852 | 29,050 | 32,310 | 35,585 | 38,772 | 41,292 | 44,719 | 47,830 | 50,855 |
| Female | 10,047 | 11,029 | 12,525 | 13,859 | 15,369 | 16,488 | 17,525 | 18,922 | 20,329 | 21,479 |
| Male | 13,450 | 14,823 | 16,525 | 18,451 | 20,216 | 22,284 | 23,767 | 25,797 | 27,501 | 29,376 |
| Total (%) | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% |
| Female | 42.8% | 42.7% | 43.1% | 42.9% | 43.2% | 42.5% | 42.4% | 42.3% | 42.5% | 42.2% |
| Male | 57.2% | 57.3% | 56.9% | 57.1% | 56.8% | 57.5% | 57.6% | 57.7% | 57.5% | 57.8% |