| Gender | Year | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | |
| Total | 7,571 | 9,758 | 12,051 | 13,914 | 14,893 | 13,036 | 12,642 | 12,692 | 12,763 | 12,548 |
| Female | 3,247 | 4,150 | 5,120 | 5,873 | 6,289 | 5,556 | 5,234 | 5,122 | 5,140 | 4,959 |
| Male | 4,324 | 5,608 | 6,931 | 8,041 | 8,604 | 7,480 | 7,408 | 7,570 | 7,623 | 7,589 |
| Total (%) | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% | 100.0% |
| Female | 42.9% | 42.5% | 42.5% | 42.2% | 42.2% | 42.6% | 41.4% | 40.4% | 40.3% | 39.5% |
| Male | 57.1% | 57.5% | 57.5% | 57.8% | 57.8% | 57.4% | 58.6% | 59.6% | 59.7% | 60.5% |