| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 38 |
0.9%
|
| 2 | 12 years old | 440 |
10.9%
|
| 3 | 13 years old | 1006 |
24.8%
|
| 4 | 14 years old | 1196 |
29.5%
|
| 5 | 15 years old | 955 |
23.6%
|
| 6 | 16 years old | 388 |
9.6%
|
| 7 | 17 years old or older | 32 |
0.8%
|
| Sysmiss | 36 |