| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 9 |
0.3%
|
| 2 | 12 years old | 15 |
0.5%
|
| 3 | 13 years old | 570 |
18.8%
|
| 4 | 14 years old | 994 |
32.8%
|
| 5 | 15 years old | 985 |
32.5%
|
| 6 | 16 years old | 439 |
14.5%
|
| 7 | 17 years old or older | 16 |
0.5%
|
| Sysmiss | 2 |