| Value | Category | Cases | |
|---|---|---|---|
| 0 | 13 |
0.6%
|
|
| 1 | 58 |
2.8%
|
|
| 2 | 101 |
4.8%
|
|
| 3 | 514 |
24.7%
|
|
| 4 | 1397 |
67.1%
|
|
| Sysmiss | 4896 |