| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 8 |
0.3%
|
| 2 | 12 years old | 31 |
1.2%
|
| 3 | 13 years old | 126 |
5%
|
| 4 | 14 years old | 226 |
8.9%
|
| 5 | 15 years old | 334 |
13.2%
|
| 6 | 16 years old | 457 |
18%
|
| 7 | 17 years old | 410 |
16.2%
|
| 8 | 18 years old or older | 943 |
37.2%
|
| Sysmiss | 1 |