| Gender | Year | |||||||||
| 1993 | 1994 | 1995 | 1996 | 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | |
| Total | 1,202 | 1,574 | 1,865 | 2,241 | 2,590 | 3,066 | 3,321 | 3,536 | 3,708 | 3,756 |
| Female | 674 | 885 | 1,067 | 1,303 | 1,487 | 1,814 | 1,952 | 2,074 | 2,123 | 2,183 |
| Male | 528 | 689 | 798 | 938 | 1,103 | 1,252 | 1,369 | 1,462 | 1,585 | 1,573 |
| Total (%) | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% |
| Female | 56.1% | 56.2% | 57.2% | 58.1% | 57.4% | 59.2% | 58.8% | 58.7% | 57.3% | 58.1% |
| Male | 43.9% | 43.8% | 42.8% | 41.9% | 42.6% | 40.8% | 41.2% | 41.3% | 42.7% | 41.9% |