| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 22 |
0.7%
|
| 2 | 12 years old | 92 |
2.9%
|
| 3 | 13 years old | 676 |
21.1%
|
| 4 | 14 years old | 927 |
28.9%
|
| 5 | 15 years old | 964 |
30%
|
| 6 | 16 years old | 349 |
10.9%
|
| 7 | 17 years old or older | 178 |
5.5%
|
| Sysmiss | 7 |