| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 101 |
5.7%
|
| 2 | 12 years old | 178 |
10%
|
| 3 | 13 years old | 557 |
31.3%
|
| 4 | 14 years old | 490 |
27.6%
|
| 5 | 15 years old | 365 |
20.5%
|
| 6 | 16 years old | 65 |
3.7%
|
| 7 | 17 years old or older | 22 |
1.2%
|
| Sysmiss | 48 |