| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 63 |
3%
|
| 2 | 12 years old | 88 |
4.2%
|
| 3 | 13 years old | 265 |
12.6%
|
| 4 | 14 years old | 394 |
18.8%
|
| 5 | 15 years old | 557 |
26.5%
|
| 6 | 16 years old | 523 |
24.9%
|
| 7 | 17 years old or older | 209 |
10%
|
| Sysmiss | 60 |