| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 29 |
0.8%
|
| 2 | 12 years old | 12 |
0.3%
|
| 3 | 13 years old | 127 |
3.5%
|
| 4 | 14 years old | 635 |
17.3%
|
| 5 | 15 years old | 763 |
20.8%
|
| 6 | 16 years old | 857 |
23.3%
|
| 7 | 17 years old | 660 |
18%
|
| 8 | 18 years old or older | 590 |
16.1%
|
| Sysmiss | 32 |