| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 210 |
4.4%
|
| 2 | 12 years old | 276 |
5.8%
|
| 3 | 13 years old | 816 |
17.2%
|
| 4 | 14 years old | 1330 |
28%
|
| 5 | 15 years old | 1344 |
28.3%
|
| 6 | 16 years old | 569 |
12%
|
| 7 | 17 years old or older | 207 |
4.4%
|
| Sysmiss | 68 |