| Value | Category | Cases | |
|---|---|---|---|
| 0 | 137 |
1.7%
|
|
| 1 | 645 |
7.9%
|
|
| 2 | 1379 |
16.8%
|
|
| 3 | 2510 |
30.6%
|
|
| 4 | 3536 |
43.1%
|
|
| Sysmiss | 2509 |