| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 7 |
0.5%
|
| 2 | 12 years old | 142 |
10.4%
|
| 3 | 13 years old | 400 |
29.3%
|
| 4 | 14 years old | 523 |
38.4%
|
| 5 | 15 years old | 249 |
18.3%
|
| 6 | 16 years old | 38 |
2.8%
|
| 7 | 17 years old or older | 4 |
0.3%
|
| Sysmiss | 4 |