| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 5 |
0.4%
|
| 2 | 12 years old | 56 |
4.3%
|
| 3 | 13 years old | 469 |
36.3%
|
| 4 | 14 years old | 406 |
31.4%
|
| 5 | 15 years old | 321 |
24.9%
|
| 6 | 16 years old | 31 |
2.4%
|
| 7 | 17 years old or older | 3 |
0.2%
|
| Sysmiss | 1 |