| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 6 |
0.1%
|
| 2 | 12 years old | 437 |
10.6%
|
| 3 | 13 years old | 1141 |
27.6%
|
| 4 | 14 years old | 1057 |
25.6%
|
| 5 | 15 years old | 878 |
21.2%
|
| 6 | 16 years old | 451 |
10.9%
|
| 7 | 17 years old or older | 163 |
3.9%
|
| Sysmiss | 8 |