| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 13 |
0.4%
|
| 2 | 12 years old | 17 |
0.5%
|
| 3 | 13 years old | 221 |
6.7%
|
| 4 | 14 years old | 1233 |
37.5%
|
| 5 | 15 years old | 957 |
29.1%
|
| 6 | 16 years old | 831 |
25.2%
|
| 7 | 17 years old or older | 20 |
0.6%
|
| Sysmiss | 21 |