| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 3 |
0.1%
|
| 2 | 12 years old | 4 |
0.1%
|
| 3 | 13 years old | 367 |
11.7%
|
| 4 | 14 years old | 681 |
21.6%
|
| 5 | 15 years old | 723 |
23%
|
| 6 | 16 years old | 617 |
19.6%
|
| 7 | 17 years old | 489 |
15.5%
|
| 8 | 18 years old or older | 265 |
8.4%
|
| Sysmiss | 13 |