| Value | Category | Cases | |
|---|---|---|---|
| 00 | No credit | 47556 |
11.9%
|
| 11 | Partial credit | 12202 |
3.1%
|
| 12 | Partial credit | 4794 |
1.2%
|
| 21 | Full credit | 10480 |
2.6%
|
| 97 | N/A | 276653 |
69.4%
|
| 99 | Missing | 47065 |
11.8%
|