| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 24 |
0.5%
|
| 2 | 12 years old | 199 |
3.8%
|
| 3 | 13 years old | 913 |
17.5%
|
| 4 | 14 years old | 1086 |
20.8%
|
| 5 | 15 years old | 1130 |
21.7%
|
| 6 | 16 years old or older | 1867 |
35.8%
|
| Sysmiss | 19 |