| Value | Category | Cases | |
|---|---|---|---|
| 0 | 134 |
18.6%
|
|
| 1 | 454 |
63%
|
|
| 2 | 112 |
15.5%
|
|
| 3 | 15 |
2.1%
|
|
| 4 | 3 |
0.4%
|
|
| 5 | 2 |
0.3%
|
|
| 6 | 1 |
0.1%
|
|
| Sysmiss | 30 |