| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 6 |
3.1%
|
| 0 | 8 |
4.1%
|
|
| 10 | 3 |
1.6%
|
|
| 20 | 2 |
1%
|
|
| 30 | 4 |
2.1%
|
|
| 40 | 5 |
2.6%
|
|
| 50 | 16 |
8.3%
|
|
| 60 | 9 |
4.7%
|
|
| 70 | 14 |
7.3%
|
|
| 75 | 1 |
0.5%
|
|
| 77 | 1 |
0.5%
|
|
| 80 | 16 |
8.3%
|
|
| 85 | 3 |
1.6%
|
|
| 90 | 9 |
4.7%
|
|
| 92 | 1 |
0.5%
|
|
| 94 | 1 |
0.5%
|
|
| 95 | 2 |
1%
|
|
| 96 | 1 |
0.5%
|
|
| 100 | 91 |
47.2%
|
|
| Sysmiss | 167 |