| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 23 |
0.9%
|
| 2 | 12 years old | 350 |
13.4%
|
| 3 | 13 years old | 766 |
29.3%
|
| 4 | 14 years old | 874 |
33.4%
|
| 5 | 15 years old | 456 |
17.4%
|
| 6 | 16 years old | 119 |
4.5%
|
| 7 | 17 years old or older | 28 |
1.1%
|
| Sysmiss | 5 |