| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 66 |
0.8%
|
| 2 | 12 years old | 42 |
0.5%
|
| 3 | 13 years old | 840 |
10.7%
|
| 4 | 14 years old | 1418 |
18.1%
|
| 5 | 15 years old | 1593 |
20.3%
|
| 6 | 16 years old | 1591 |
20.3%
|
| 7 | 17 years old | 1411 |
18%
|
| 8 | 18 years old or older | 875 |
11.2%
|
| Sysmiss | 95 |