| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 6 |
0.2%
|
| 2 | 12 years old | 97 |
3.4%
|
| 3 | 13 years old | 457 |
15.9%
|
| 4 | 14 years old | 731 |
25.5%
|
| 5 | 15 years old | 705 |
24.5%
|
| 6 | 16 years old | 556 |
19.4%
|
| 7 | 17 years old | 194 |
6.8%
|
| 8 | 18 years old or older | 126 |
4.4%
|
| Sysmiss | 2 |