| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 651 |
10.9%
|
| 2 | 12 years old | 607 |
10.2%
|
| 3 | 13 years old | 848 |
14.2%
|
| 4 | 14 years old | 851 |
14.3%
|
| 5 | 15 years old | 909 |
15.2%
|
| 6 | 16 years old | 817 |
13.7%
|
| 7 | 17 years old | 691 |
11.6%
|
| 8 | 18 and over | 597 |
10%
|
| Sysmiss | 249 |