| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 38 |
2.4%
|
| 2 | 12 years old | 32 |
2.1%
|
| 3 | 13 years old | 233 |
15%
|
| 4 | 14 years old | 470 |
30.3%
|
| 5 | 15 years old | 447 |
28.8%
|
| 6 | 16 years old | 252 |
16.2%
|
| 7 | 17 years old or older | 80 |
5.2%
|
| Sysmiss | 23 |