| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 405 |
22.3%
|
| 2 | 12 years old | 454 |
24.9%
|
| 3 | 13 years old | 399 |
21.9%
|
| 4 | 14 years old | 363 |
19.9%
|
| 5 | 15 years old | 120 |
6.6%
|
| 6 | 16 years old | 52 |
2.9%
|
| 7 | 17 years old or older | 27 |
1.5%
|
| Sysmiss | 74 |