| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 71 |
4.8%
|
| 2 | 12 years old | 344 |
23%
|
| 3 | 13 years old | 402 |
26.9%
|
| 4 | 14 years old | 447 |
29.9%
|
| 5 | 15 years old | 188 |
12.6%
|
| 6 | 16 years old | 32 |
2.1%
|
| 7 | 17 years old or older | 9 |
0.6%
|
| Sysmiss | 63 |