| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 60 |
3%
|
| 2 | 12 years old | 427 |
21.6%
|
| 3 | 13 years old | 731 |
37%
|
| 4 | 14 years old | 588 |
29.8%
|
| 5 | 15 years old | 153 |
7.7%
|
| 6 | 16 years old | 12 |
0.6%
|
| 7 | 17 years old | 4 |
0.2%
|
| 8 | 18 and over | 0 |
0%
|
| Sysmiss | 2052 |