| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 118 |
3.3%
|
| 2 | 12 years old | 221 |
6.1%
|
| 3 | 13 years old | 607 |
16.7%
|
| 4 | 14 years old | 1066 |
29.4%
|
| 5 | 15 years old | 1021 |
28.1%
|
| 6 | 16 years old | 499 |
13.7%
|
| 7 | 17 years old or older | 98 |
2.7%
|
| Sysmiss | 39 |