| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 8 |
0.2%
|
| 2 | 12 years old | 12 |
0.3%
|
| 3 | 13 years old | 889 |
23.1%
|
| 4 | 14 years old | 1180 |
30.7%
|
| 5 | 15 years old | 1293 |
33.6%
|
| 6 | 16 years old | 449 |
11.7%
|
| 7 | 17 years old or older | 17 |
0.4%
|
| Sysmiss | 13 |