| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 147 |
2.4%
|
| 2 | 12 years old | 470 |
7.6%
|
| 3 | 13 years old | 877 |
14.2%
|
| 4 | 14 years old | 1252 |
20.3%
|
| 5 | 15 years old | 1684 |
27.4%
|
| 6 | 16 years old or older | 1725 |
28%
|
| Sysmiss | 81 |