| Value | Category | Cases | |
|---|---|---|---|
| 0 | 3021 |
91.3%
|
|
| 1 | 171 |
5.2%
|
|
| 2 | 38 |
1.1%
|
|
| 4 | 39 |
1.2%
|
|
| 9 | 20 |
0.6%
|
|
| 20 | 20 |
0.6%
|
|
| Sysmiss | 18 |