| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 27 |
0.7%
|
| 2 | 12 years old | 36 |
0.9%
|
| 3 | 13 years old | 389 |
9.6%
|
| 4 | 14 years old | 1100 |
27.1%
|
| 5 | 15 years old | 1191 |
29.4%
|
| 6 | 16 years old | 1038 |
25.6%
|
| 7 | 17 years old or older | 271 |
6.7%
|
| Sysmiss | 49 |