| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 179 |
3.7%
|
| 2 | 12 years old | 1259 |
26.3%
|
| 3 | 13 years old | 1684 |
35.1%
|
| 4 | 14 years old | 1476 |
30.8%
|
| 5 | 15 years old | 168 |
3.5%
|
| 6 | 16 years old | 21 |
0.4%
|
| 7 | 17 years old or older | 6 |
0.1%
|
| Sysmiss | 8 |