| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 37 |
0.3%
|
| 2 | 12 years old | 414 |
3.1%
|
| 3 | 13 years old | 4463 |
33.1%
|
| 4 | 14 years old | 4797 |
35.6%
|
| 5 | 15 years old | 3350 |
24.9%
|
| 6 | 16 years old | 374 |
2.8%
|
| 7 | 17 years old or older | 40 |
0.3%
|
| Sysmiss | 22 |