| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 105 |
5.6%
|
| 2 | 12 years old | 208 |
11.2%
|
| 3 | 13 years old | 313 |
16.8%
|
| 4 | 14 years old | 367 |
19.7%
|
| 5 | 15 years old | 359 |
19.3%
|
| 6 | 16 years old | 226 |
12.1%
|
| 7 | 17 years old or older | 286 |
15.3%
|
| Sysmiss | 37 |