| Value | Category | Cases | |
|---|---|---|---|
| 0 | 271 |
88%
|
|
| 1 | 20 |
6.5%
|
|
| 2 | 9 |
2.9%
|
|
| 3 | 5 |
1.6%
|
|
| 4 | 1 |
0.3%
|
|
| 6 | 1 |
0.3%
|
|
| 8 | 1 |
0.3%
|
|
| Sysmiss | 1963 |