| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 16 |
0.2%
|
| 2 | 12 years old | 82 |
1.2%
|
| 3 | 13 years old | 1367 |
19.3%
|
| 4 | 14 years old | 2586 |
36.4%
|
| 5 | 15 years old | 2831 |
39.9%
|
| 6 | 16 years old or older | 218 |
3.1%
|
| Sysmiss | 241 |