| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 44 |
2.2%
|
| 2 | 12 years old | 92 |
4.7%
|
| 3 | 13 years old | 238 |
12.1%
|
| 4 | 14 years old | 395 |
20.2%
|
| 5 | 15 years old | 422 |
21.5%
|
| 6 | 16 years old | 448 |
22.9%
|
| 7 | 17 years old or older | 321 |
16.4%
|
| Sysmiss | 14 |