| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 9 |
0.5%
|
| 2 | 12 years old | 54 |
2.9%
|
| 3 | 13 years old | 531 |
29%
|
| 4 | 14 years old | 598 |
32.6%
|
| 5 | 15 years old | 538 |
29.4%
|
| 6 | 16 years old | 77 |
4.2%
|
| 7 | 17 years old or older | 26 |
1.4%
|
| Sysmiss | 12 |