| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 55 |
1.2%
|
| 2 | 12 years old | 154 |
3.4%
|
| 3 | 13 years old | 361 |
8%
|
| 4 | 14 years old | 589 |
13.1%
|
| 5 | 15 years old | 687 |
15.3%
|
| 6 | 16 years old | 910 |
20.3%
|
| 7 | 17 years old or older | 1735 |
38.6%
|
| Sysmiss | 65 |