| Value | Category | Cases | |
|---|---|---|---|
| 00 | No credit | 23212 |
5.8%
|
| 11 | Partial credit | 4936 |
1.2%
|
| 12 | Partial credit | 7842 |
2%
|
| 13 | Partial credit | 2251 |
0.6%
|
| 21 | Full credit | 54807 |
13.7%
|
| 97 | N/A | 276544 |
69.4%
|
| 99 | Missing | 29158 |
7.3%
|