| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 120 |
2.8%
|
| 2 | 12 years old | 370 |
8.6%
|
| 3 | 13 years old | 879 |
20.4%
|
| 4 | 14 years old | 1147 |
26.6%
|
| 5 | 15 years old | 1105 |
25.6%
|
| 6 | 16 years old | 459 |
10.6%
|
| 7 | 17 years old or older | 234 |
5.4%
|
| Sysmiss | 12 |