| Value | Category | Cases | |
|---|---|---|---|
| 0 | 3 |
15%
|
|
| 2 | 1 |
5%
|
|
| 7 | 1 |
5%
|
|
| 10 | 1 |
5%
|
|
| 20 | 1 |
5%
|
|
| 25 | 1 |
5%
|
|
| 28 | 1 |
5%
|
|
| 30 | 3 |
15%
|
|
| 998 | 98. Don't know | 0 |
0%
|
| 9996 | 96. Not applicable | 0 |
0%
|
| 9998 | 98. Don't know | 8 |
40%
|
| Sysmiss | 287 |