| Value | Category | Cases | |
|---|---|---|---|
| 1 | 12 years old or younger | 1195 |
10.4%
|
| 2 | 13 years old | 3672 |
31.9%
|
| 3 | 14 years old | 3688 |
32%
|
| 4 | 15 years old | 2658 |
23.1%
|
| 5 | 16 years old | 271 |
2.4%
|
| 6 | 17 years old or older | 42 |
0.4%
|
| Sysmiss | 10 |