| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 28 |
0.9%
|
| 2 | 12 years old | 305 |
9.3%
|
| 3 | 13 years old | 723 |
22.1%
|
| 4 | 14 years old | 880 |
26.9%
|
| 5 | 15 years old | 746 |
22.8%
|
| 6 | 16 years old | 501 |
15.3%
|
| 7 | 17 years old or older | 94 |
2.9%
|
| Sysmiss | 25 |