| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 11 |
0.2%
|
| 2 | 12 years old | 214 |
3.4%
|
| 3 | 13 years old | 1314 |
21.2%
|
| 4 | 14 years old | 1392 |
22.4%
|
| 5 | 15 years old | 1317 |
21.2%
|
| 6 | 16 years old | 1023 |
16.5%
|
| 7 | 17 years old or older | 937 |
15.1%
|
| Sysmiss | 20 |