| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 10 |
0.5%
|
| 2 | 12 years old | 36 |
2%
|
| 3 | 13 years old | 383 |
20.7%
|
| 4 | 14 years old | 577 |
31.3%
|
| 5 | 15 years old | 569 |
30.8%
|
| 6 | 16 years old | 190 |
10.3%
|
| 7 | 17 years old | 66 |
3.6%
|
| 8 | 18 years old or older | 15 |
0.8%
|
| Sysmiss | 26 |