| Value | Category | Cases | |
|---|---|---|---|
| 0 | 12 |
2.2%
|
|
| 1 | 469 |
87.7%
|
|
| 2 | 40 |
7.5%
|
|
| 3 | 11 |
2.1%
|
|
| 4 | 1 |
0.2%
|
|
| 6 | 2 |
0.4%
|
|
| Sysmiss | 26 |