| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 10 |
0.3%
|
| 2 | 12 years old | 8 |
0.3%
|
| 3 | 13 years old | 373 |
12.7%
|
| 4 | 14 years old | 609 |
20.8%
|
| 5 | 15 years old | 583 |
19.9%
|
| 6 | 16 years old | 538 |
18.3%
|
| 7 | 17 years old | 530 |
18.1%
|
| 8 | 18 years old or older | 281 |
9.6%
|
| Sysmiss | 16 |