| Value | Category | Cases | |
|---|---|---|---|
| 0 | 41 |
60.3%
|
|
| 2 | 2 |
2.9%
|
|
| 4 | 1 |
1.5%
|
|
| 10 | 1 |
1.5%
|
|
| 20 | 1 |
1.5%
|
|
| 60 | 1 |
1.5%
|
|
| 77 | 21 |
30.9%
|
|
| 99 | Don't know | 0 |
0%
|
| Sysmiss | 1903 |