| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 482 |
0.7%
|
| 2 | 12 years old | 1897 |
2.9%
|
| 3 | 13 years old | 14646 |
22.4%
|
| 4 | 14 years old | 15342 |
23.5%
|
| 5 | 15 years old | 14883 |
22.8%
|
| 6 | 16 years old | 14588 |
22.3%
|
| 7 | 17 years old or older | 3550 |
5.4%
|
| Sysmiss | 147 |