| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 106 |
4.7%
|
| 2 | 12 years old | 98 |
4.4%
|
| 3 | 13 years old | 107 |
4.8%
|
| 4 | 14 years old | 217 |
9.6%
|
| 5 | 15 years old | 364 |
16.2%
|
| 6 | 16 years old | 618 |
27.5%
|
| 7 | 17 years old or older | 741 |
32.9%
|
| Sysmiss | 33 |