| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 3 |
3.3%
|
| 0 | 9 |
10%
|
|
| 20 | 2 |
2.2%
|
|
| 30 | 4 |
4.4%
|
|
| 35 | 5 |
5.6%
|
|
| 40 | 3 |
3.3%
|
|
| 45 | 3 |
3.3%
|
|
| 50 | 17 |
18.9%
|
|
| 55 | 3 |
3.3%
|
|
| 58 | 1 |
1.1%
|
|
| 60 | 11 |
12.2%
|
|
| 68 | 1 |
1.1%
|
|
| 70 | 6 |
6.7%
|
|
| 75 | 1 |
1.1%
|
|
| 80 | 6 |
6.7%
|
|
| 90 | 2 |
2.2%
|
|
| 100 | 13 |
14.4%
|
|
| Sysmiss | 670 |