| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 3 |
0.1%
|
| 2 | 12 years old | 1 |
0%
|
| 3 | 13 years old | 610 |
20.1%
|
| 4 | 14 years old | 678 |
22.4%
|
| 5 | 15 years old | 596 |
19.7%
|
| 6 | 16 years old | 598 |
19.7%
|
| 7 | 17 years old | 534 |
17.6%
|
| 8 | 18 years old or older | 11 |
0.4%
|
| Sysmiss | 3 |