| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 3 |
0.2%
|
| 2 | 12 years old | 2 |
0.1%
|
| 3 | 13 years old | 326 |
17.9%
|
| 4 | 14 years old | 508 |
27.9%
|
| 5 | 15 years old | 594 |
32.6%
|
| 6 | 16 years old | 301 |
16.5%
|
| 7 | 17 years old or older | 86 |
4.7%
|
| Sysmiss | 2 |