| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 7 |
0.3%
|
| 2 | 12 years old | 113 |
4.4%
|
| 3 | 13 years old | 520 |
20%
|
| 4 | 14 years old | 617 |
23.8%
|
| 5 | 15 years old | 574 |
22.1%
|
| 6 | 16 years old | 509 |
19.6%
|
| 7 | 17 years old | 199 |
7.7%
|
| 8 | 18 years old or older | 57 |
2.2%
|
| Sysmiss | 3 |