| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 12 |
0.6%
|
| 2 | 12 years old | 41 |
2%
|
| 3 | 13 years old | 293 |
14.1%
|
| 4 | 14 years old | 606 |
29.2%
|
| 5 | 15 years old | 735 |
35.5%
|
| 6 | 16 years old | 274 |
13.2%
|
| 7 | 17 years old or older | 111 |
5.4%
|
| Sysmiss | 35 |