| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 28 |
1.5%
|
| 2 | 12 years old | 499 |
27%
|
| 3 | 13 years old | 522 |
28.3%
|
| 4 | 14 years old | 566 |
30.7%
|
| 5 | 15 years old | 180 |
9.8%
|
| 6 | 16 years old | 51 |
2.8%
|
| 7 | 17 years old or older | 0 |
0%
|
| Sysmiss | 8 |