| Value | Category | Cases | |
|---|---|---|---|
| 0 | None | 1112 |
6%
|
| 1 | Grade 1 | 1161 |
6.3%
|
| 2 | Grade 2 | 1626 |
8.8%
|
| 3 | Grade 3 | 1816 |
9.8%
|
| 4 | Grade 4 | 1687 |
9.1%
|
| 5 | Grade 5 | 2200 |
11.9%
|
| 6 | Grade 6 | 1321 |
7.2%
|
| 7 | Grade 7 | 1129 |
6.1%
|
| 8 | Grade 8 | 1060 |
5.7%
|
| 9 | Grade 9 | 2903 |
15.7%
|
| 10 | Grade 10 | 430 |
2.3%
|
| 11 | Grade 11 | 401 |
2.2%
|
| 12 | Grade 12 | 1629 |
8.8%
|
| 13 | Don't know | 0 |
0%
|
| Sysmiss | 4992 |