| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 9 |
0.7%
|
| 2 | 12 years old | 237 |
17.5%
|
| 3 | 13 years old | 517 |
38.2%
|
| 4 | 14 years old | 404 |
29.9%
|
| 5 | 15 years old | 150 |
11.1%
|
| 6 | 16 years old | 35 |
2.6%
|
| 7 | 17 years old | 1 |
0.1%
|
| 8 | 18 years old or older | 0 |
0%
|
| Sysmiss | 4 |