| | |||||
Year | 1999 | 2001 | 2003 | 2005 | 1999-2005 | 2005-2006 |
| % | % | % | % | % | % |
Males | 72.3 | 69.8 | 71.8 | 65.2 | 69.2 | 67.0 |
Females | 68.2 | 55.7 | 68.7 | 55.7 | 62.4 | 57.5 |
Grade 9 | 81.5 | 71.5 | 78.8 | 70.6 | 75.4 | 73.4 |
Grade 10 | 71.7 | 64.0 | 67.8 | 57.8 | 64.3 | 63.2 |
Grade 11 | 65.1 | 56.1 | 67.5 | 60.2 | 63.1 | 58.7 |
Grade 12 | 58.1 | 53.6 | 66.4 | 54.5 | 59.2 | 51.3 |
Total | 70.3 | 63.1 | 70.2 | 60.3 |
| 62.4 |