| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 32 |
1.6%
|
| 2 | 12 years old | 90 |
4.4%
|
| 3 | 13 years old | 190 |
9.4%
|
| 4 | 14 years old | 410 |
20.2%
|
| 5 | 15 years old | 595 |
29.3%
|
| 6 | 16 years old or older | 711 |
35.1%
|
| Sysmiss | 35 |