| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 10 |
0.5%
|
| 2 | 12 years old | 16 |
0.7%
|
| 3 | 13 years old | 262 |
12.3%
|
| 4 | 14 years old | 464 |
21.7%
|
| 5 | 15 years old | 659 |
30.9%
|
| 6 | 16 years old or older | 725 |
33.9%
|
| Sysmiss | 75 |