| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 22 |
1%
|
| 2 | 12 years old | 157 |
7%
|
| 3 | 13 years old | 486 |
21.7%
|
| 4 | 14 years old | 640 |
28.6%
|
| 5 | 15 years old | 671 |
30%
|
| 6 | 16 years old | 188 |
8.4%
|
| 7 | 17 years old or older | 72 |
3.2%
|
| Sysmiss | 47 |