| Value | Category | Cases | |
|---|---|---|---|
| 1 | year 9 | 154 |
25.2%
|
| 2 | year 10 | 142 |
23.2%
|
| 3 | year 11 | 139 |
22.7%
|
| 4 | Year 12 | 110 |
18%
|
| 5 | Year 13 | 67 |
10.9%
|
| Sysmiss | 2 |