| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 17 |
0.6%
|
| 2 | 12 years old | 75 |
2.8%
|
| 3 | 13 years old | 148 |
5.5%
|
| 4 | 14 years old | 338 |
12.6%
|
| 5 | 15 years old | 609 |
22.7%
|
| 6 | 16 years old or older | 1494 |
55.7%
|
| Sysmiss | 9 |