| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 42 |
2.2%
|
| 2 | 12 years old | 227 |
12.2%
|
| 3 | 13 years old | 485 |
26%
|
| 4 | 14 years old | 637 |
34.1%
|
| 5 | 15 years old | 395 |
21.2%
|
| 6 | 16 years old | 70 |
3.7%
|
| 7 | 17 years old or older | 11 |
0.6%
|
| Sysmiss | 59 |