| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 15 |
0.6%
|
| 2 | 12 years old | 75 |
3%
|
| 3 | 13 years old | 557 |
22.3%
|
| 4 | 14 years old | 608 |
24.4%
|
| 5 | 15 years old | 521 |
20.9%
|
| 6 | 16 years old | 337 |
13.5%
|
| 7 | 17 years old or older | 383 |
15.3%
|
| Sysmiss | 64 |