| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 69 |
4.1%
|
| 2 | 12 years old | 349 |
20.5%
|
| 3 | 13 years old | 560 |
32.9%
|
| 4 | 14 years old | 516 |
30.3%
|
| 5 | 15 years old | 171 |
10%
|
| 6 | 16 years old | 29 |
1.7%
|
| 7 | 17 years old or older | 8 |
0.5%
|
| Sysmiss | 36 |