| Value | Category | Cases | |
|---|---|---|---|
| 0 | 488 |
30.6%
|
|
| 1 | 484 |
30.3%
|
|
| 2 | 473 |
29.6%
|
|
| 3 | 139 |
8.7%
|
|
| 4 | 12 |
0.8%
|
|
| Sysmiss | 99 |