| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 20 |
0.7%
|
| 2 | 12 years old | 280 |
9.9%
|
| 3 | 13 years old | 619 |
21.9%
|
| 4 | 14 years old | 707 |
25%
|
| 5 | 15 years old | 631 |
22.3%
|
| 6 | 16 years old | 428 |
15.1%
|
| 7 | 17 years old | 117 |
4.1%
|
| 8 | 18 years old or older | 26 |
0.9%
|
| Sysmiss | 10 |