| Value | Category | Cases | |
|---|---|---|---|
| 0 | 990 |
72.3%
|
|
| 1 | 272 |
19.9%
|
|
| 2 | 80 |
5.8%
|
|
| 3 | 20 |
1.5%
|
|
| 4 | 4 |
0.3%
|
|
| 7 | 4 |
0.3%
|
|
| Sysmiss | 13 |