| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 71 |
5.7%
|
| 2 | 12 years old | 53 |
4.2%
|
| 3 | 13 years old | 61 |
4.9%
|
| 4 | 14 years old | 208 |
16.7%
|
| 5 | 15 years old | 290 |
23.2%
|
| 6 | 16 years old | 349 |
27.9%
|
| 7 | 17 years old or older | 217 |
17.4%
|
| Sysmiss | 35 |