| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 51 |
3.7%
|
| 2 | 12 years old | 333 |
24.3%
|
| 3 | 13 years old | 411 |
30%
|
| 4 | 14 years old | 425 |
31%
|
| 5 | 15 years old | 117 |
8.5%
|
| 6 | 16 years old | 20 |
1.5%
|
| 7 | 17 years old or older | 13 |
0.9%
|
| Sysmiss | 46 |