| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 79 |
1.6%
|
| 2 | 12 years old | 102 |
2.1%
|
| 3 | 13 years old | 763 |
15.4%
|
| 4 | 14 years old | 1531 |
30.9%
|
| 5 | 15 years old | 1737 |
35.1%
|
| 6 | 16 years old | 651 |
13.2%
|
| 7 | 17 years old or older | 86 |
1.7%
|
| Sysmiss | 14 |