| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 4 |
1.9%
|
| 0 | 136 |
63.8%
|
|
| 1 | 1 |
0.5%
|
|
| 5 | 3 |
1.4%
|
|
| 10 | 6 |
2.8%
|
|
| 17 | 1 |
0.5%
|
|
| 20 | 9 |
4.2%
|
|
| 25 | 1 |
0.5%
|
|
| 30 | 10 |
4.7%
|
|
| 40 | 4 |
1.9%
|
|
| 50 | 9 |
4.2%
|
|
| 60 | 2 |
0.9%
|
|
| 70 | 5 |
2.3%
|
|
| 77 | 1 |
0.5%
|
|
| 80 | 4 |
1.9%
|
|
| 90 | 3 |
1.4%
|
|
| 100 | 14 |
6.6%
|
|
| Sysmiss | 261 |