| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 6 |
0.3%
|
| 2 | 12 years old | 309 |
14.2%
|
| 3 | 13 years old | 709 |
32.7%
|
| 4 | 14 years old | 666 |
30.7%
|
| 5 | 15 years old | 353 |
16.3%
|
| 6 | 16 years old | 90 |
4.1%
|
| 7 | 17 years old or older | 36 |
1.7%
|
| Sysmiss | 5 |