| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 2 |
0.1%
|
| 2 | 12 years old | 8 |
0.3%
|
| 3 | 13 years old | 608 |
20.2%
|
| 4 | 14 years old | 700 |
23.3%
|
| 5 | 15 years old | 639 |
21.2%
|
| 6 | 16 years old | 578 |
19.2%
|
| 7 | 17 years old | 437 |
14.5%
|
| 8 | 18 years old or older | 37 |
1.2%
|
| Sysmiss | 3 |