| Value | Category | Cases | |
|---|---|---|---|
| 0 | 15 |
0.5%
|
|
| 1 | 12 |
0.4%
|
|
| 2 | 40 |
1.3%
|
|
| 3 | 196 |
6.3%
|
|
| 4 | 2863 |
91.6%
|
|
| Sysmiss | 218 |