| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 112 |
3%
|
| 2 | 12 years old | 274 |
7.4%
|
| 3 | 13 years old | 792 |
21.3%
|
| 4 | 14 years old | 946 |
25.5%
|
| 5 | 15 years old | 1203 |
32.4%
|
| 6 | 16 years old | 240 |
6.5%
|
| 7 | 17 years old or older | 143 |
3.9%
|
| Sysmiss | 30 |