| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 54 |
3.1%
|
| 2 | 12 years old | 56 |
3.3%
|
| 3 | 13 years old | 176 |
10.2%
|
| 4 | 14 years old | 411 |
23.9%
|
| 5 | 15 years old | 431 |
25.1%
|
| 6 | 16 years old | 401 |
23.3%
|
| 7 | 17 years old or older | 189 |
11%
|
| Sysmiss | 30 |