| Value | Category | Cases | |
|---|---|---|---|
| 0 | 11 |
0.4%
|
|
| 1 | 31 |
1.1%
|
|
| 2 | 37 |
1.3%
|
|
| 3 | 2818 |
97.3%
|
|
| Sysmiss | 20 |