| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 372 |
5.7%
|
| 2 | 12 years old | 809 |
12.4%
|
| 3 | 13 years old | 1043 |
15.9%
|
| 4 | 14 years old | 294 |
4.5%
|
| 5 | 15 years old | 1027 |
15.7%
|
| 6 | 16 years old | 669 |
10.2%
|
| 7 | 17 years old | 914 |
14%
|
| 8 | 18 and over | 1421 |
21.7%
|
| Sysmiss | 199 |