| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 124 |
2.7%
|
| 2 | 12 years old | 233 |
5%
|
| 3 | 13 years old | 1312 |
28.2%
|
| 4 | 14 years old | 1338 |
28.7%
|
| 5 | 15 years old | 1327 |
28.5%
|
| 6 | 16 years old | 287 |
6.2%
|
| 7 | 17 years old | 33 |
0.7%
|
| 8 | 18 and over | 0 |
0%
|
| Sysmiss | 174 |