| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 37 |
0.8%
|
| 2 | 12 years old | 189 |
4%
|
| 3 | 13 years old | 612 |
13%
|
| 4 | 14 years old | 835 |
17.8%
|
| 5 | 15 years old | 897 |
19.1%
|
| 6 | 16 years old | 824 |
17.5%
|
| 7 | 17 years old | 663 |
14.1%
|
| 8 | 18 years old or older | 646 |
13.7%
|
| Sysmiss | 9 |