| Value | Category | Cases | |
|---|---|---|---|
| 10 years old | 82 |
16.3%
|
|
| 6 years old | 9 |
1.8%
|
|
| 7 years old | 111 |
22%
|
|
| 8 years old | 206 |
40.9%
|
|
| 9 years old | 96 |
19%
|