| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 4 |
0.3%
|
| 2 | 12 years old | 22 |
1.8%
|
| 3 | 13 years old | 188 |
15.5%
|
| 4 | 14 years old | 412 |
33.9%
|
| 5 | 15 years old | 363 |
29.9%
|
| 6 | 16 years old | 187 |
15.4%
|
| 7 | 17 years old or older | 38 |
3.1%
|
| Sysmiss | 7 |