| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 26 |
1%
|
| 2 | 12 years old | 17 |
0.7%
|
| 3 | 13 years old | 296 |
11.7%
|
| 4 | 14 years old | 432 |
17.1%
|
| 5 | 15 years old | 493 |
19.5%
|
| 6 | 16 years old | 524 |
20.7%
|
| 7 | 17 years old | 476 |
18.8%
|
| 8 | 18 years old or older | 266 |
10.5%
|
| Sysmiss | 20 |