| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 11 |
0.7%
|
| 2 | 12 years old | 13 |
0.8%
|
| 3 | 13 years old | 137 |
8.1%
|
| 4 | 14 years old | 378 |
22.4%
|
| 5 | 15 years old | 516 |
30.6%
|
| 6 | 16 years old or older | 630 |
37.4%
|
| Sysmiss | 24 |