| Value | Category | Cases | |
|---|---|---|---|
| 1 | 11 years old or younger | 9 |
5.5%
|
| 2 | 12 years old | 8 |
4.9%
|
| 3 | 13 years old | 28 |
17.2%
|
| 4 | 14 years old | 59 |
36.2%
|
| 5 | 15 years old | 42 |
25.8%
|
| 6 | 16 years old | 15 |
9.2%
|
| 7 | 17 years old or older | 2 |
1.2%
|
| Sysmiss | 4 |