| Value | Category | Cases | |
|---|---|---|---|
| 0 | 31 |
1.3%
|
|
| 1 | 8 |
0.3%
|
|
| 2 | 31 |
1.3%
|
|
| 3 | 129 |
5.4%
|
|
| 4 | 2198 |
91.7%
|
|
| Sysmiss | 2432 |