| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 98 |
5.8%
|
| 2 | 12 years old | 191 |
11.3%
|
| 3 | 13 years old | 401 |
23.6%
|
| 4 | 14 years old | 414 |
24.4%
|
| 5 | 15 years old | 343 |
20.2%
|
| 6 | 16 years old | 187 |
11%
|
| 7 | 17 years old or older | 63 |
3.7%
|
| Sysmiss | 7 |