| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1AB | 646 |
6.6%
|
| 2 | 1C | 1812 |
18.6%
|
| 3 | Grade 2 | 4238 |
43.6%
|
| 4 | Grade 3 | 3027 |
31.1%
|