| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 93 |
1.9%
|
| 2 | 12 years old | 152 |
3.1%
|
| 3 | 13 years old | 779 |
16.1%
|
| 4 | 14 years old | 1313 |
27.1%
|
| 5 | 15 years old | 1360 |
28.1%
|
| 6 | 16 years old | 789 |
16.3%
|
| 7 | 17 years old or older | 356 |
7.4%
|
| Sysmiss | 84 |