| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 4 |
0.3%
|
| 2 | 12 years old | 55 |
3.8%
|
| 3 | 13 years old | 308 |
21.1%
|
| 4 | 14 years old | 405 |
27.7%
|
| 5 | 15 years old | 422 |
28.9%
|
| 6 | 16 years old | 193 |
13.2%
|
| 7 | 17 years old | 51 |
3.5%
|
| 8 | 18 years old or older | 22 |
1.5%
|
| Sysmiss | 12 |