| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 60 |
2.2%
|
| 2 | 12 years old | 103 |
3.8%
|
| 3 | 13 years old | 411 |
15.3%
|
| 4 | 14 years old | 709 |
26.4%
|
| 5 | 15 years old | 691 |
25.7%
|
| 6 | 16 years old | 480 |
17.9%
|
| 7 | 17 years old or older | 231 |
8.6%
|
| Sysmiss | 104 |