| Value | Category | Cases | |
|---|---|---|---|
| 0 | 11 |
11.1%
|
|
| 1 | 9 |
9.1%
|
|
| 2 | 13 |
13.1%
|
|
| 3 | 8 |
8.1%
|
|
| 4 | 5 |
5.1%
|
|
| 5 | 6 |
6.1%
|
|
| 7 | 14 |
14.1%
|
|
| 8 | 1 |
1%
|
|
| 10 | 5 |
5.1%
|
|
| 12 | 1 |
1%
|
|
| 14 | 1 |
1%
|
|
| 15 | 3 |
3%
|
|
| 20 | 2 |
2%
|
|
| 21 | 1 |
1%
|
|
| 25 | 1 |
1%
|
|
| 30 | 15 |
15.2%
|
|
| 77 | Don't know | 3 |
3%
|
| Sysmiss | 6555 |