| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 79 |
0.3%
|
| 2 | 12 years old | 638 |
2.3%
|
| 3 | 13 years old | 4989 |
17.7%
|
| 4 | 14 years old | 8177 |
29.1%
|
| 5 | 15 years old | 7724 |
27.5%
|
| 6 | 16 years old or older | 6527 |
23.2%
|
| Sysmiss | 234 |