| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 96 |
2.3%
|
| 2 | 12 years old | 314 |
7.5%
|
| 3 | 13 years old | 977 |
23.3%
|
| 4 | 14 years old | 1162 |
27.7%
|
| 5 | 15 years old | 1107 |
26.4%
|
| 6 | 16 years old | 426 |
10.2%
|
| 7 | 17 years old or older | 110 |
2.6%
|
| Sysmiss | 22 |