| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 66 |
1.7%
|
| 2 | 12 years old | 475 |
12.2%
|
| 3 | 13 years old | 990 |
25.5%
|
| 4 | 14 years old | 1107 |
28.5%
|
| 5 | 15 years old | 764 |
19.7%
|
| 6 | 16 years old | 290 |
7.5%
|
| 7 | 17 years old or older | 192 |
4.9%
|
| Sysmiss | 27 |