| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 19 |
0.4%
|
| 2 | 12 years old | 176 |
4.1%
|
| 3 | 13 years old | 1032 |
24.3%
|
| 4 | 14 years old | 1231 |
29%
|
| 5 | 15 years old | 1113 |
26.2%
|
| 6 | 16 years old | 497 |
11.7%
|
| 7 | 17 years old or older | 179 |
4.2%
|
| Sysmiss | 12 |