| Value | Category | Cases | |
|---|---|---|---|
| 0 | 174 |
5.3%
|
|
| 1 | 1387 |
41.9%
|
|
| 2 | 1118 |
33.8%
|
|
| 3 | 550 |
16.6%
|
|
| 4 | 58 |
1.8%
|
|
| 20 | 20 |
0.6%
|
|
| Sysmiss | 20 |