| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1AB | 621 |
6.4%
|
| 2 | 1C | 1774 |
18.2%
|
| 3 | Grade 2 | 4274 |
43.8%
|
| 4 | Grade 3 | 3096 |
31.7%
|