| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 328 |
2.7%
|
| 2 | 12 years old | 719 |
5.9%
|
| 3 | 13 years old | 1796 |
14.7%
|
| 4 | 14 years old | 2817 |
23.1%
|
| 5 | 15 years old | 2563 |
21%
|
| 6 | 16 years old | 1987 |
16.3%
|
| 7 | 17 years old or older | 2004 |
16.4%
|
| Sysmiss | 371 |