| Value | Category | Cases | |
|---|---|---|---|
| 2 | 1 |
10%
|
|
| 7 | 1 |
10%
|
|
| 8 | 4 |
40%
|
|
| 9 | 2 |
20%
|
|
| 12 | 2 |
20%
|
|
| 99 | 99. Don't know | 0 |
0%
|
| Sysmiss | 989 |