| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 21 |
0.5%
|
| 2 | 12 years old | 32 |
0.8%
|
| 3 | 13 years old | 741 |
19.4%
|
| 4 | 14 years old | 1168 |
30.5%
|
| 5 | 15 years old | 1221 |
31.9%
|
| 6 | 16 years old | 590 |
15.4%
|
| 7 | 17 years old or older | 55 |
1.4%
|
| Sysmiss | 7 |