| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 21 |
1.2%
|
| 2 | 12 years old | 180 |
10.4%
|
| 3 | 13 years old | 433 |
25%
|
| 4 | 14 years old | 440 |
25.4%
|
| 5 | 15 years old | 380 |
21.9%
|
| 6 | 16 years old | 210 |
12.1%
|
| 7 | 17 years old or older | 71 |
4.1%
|
| Sysmiss | 19 |