| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 39 |
1.3%
|
| 2 | 12 years old | 37 |
1.3%
|
| 3 | 13 years old | 157 |
5.3%
|
| 4 | 14 years old | 508 |
17.3%
|
| 5 | 15 years old | 703 |
23.9%
|
| 6 | 16 years old | 888 |
30.2%
|
| 7 | 17 years old or older | 609 |
20.7%
|
| Sysmiss | 22 |