| Value | Category | Cases | |
|---|---|---|---|
| 0 | 142 |
53.2%
|
|
| 1 | 88 |
33%
|
|
| 2 | 30 |
11.2%
|
|
| 3 | 4 |
1.5%
|
|
| 4 | 2 |
0.7%
|
|
| 6 | 1 |
0.4%
|
|
| Sysmiss | 2004 |