| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 4 |
0.2%
|
| 2 | 12 years old | 44 |
1.7%
|
| 3 | 13 years old | 566 |
21.2%
|
| 4 | 14 years old | 813 |
30.5%
|
| 5 | 15 years old | 875 |
32.8%
|
| 6 | 16 years old or older | 362 |
13.6%
|
| Sysmiss | 8 |