| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 7 |
2.2%
|
| 0 | 35 |
10.8%
|
|
| 5 | 2 |
0.6%
|
|
| 10 | 6 |
1.8%
|
|
| 20 | 13 |
4%
|
|
| 25 | 1 |
0.3%
|
|
| 30 | 7 |
2.2%
|
|
| 40 | 2 |
0.6%
|
|
| 45 | 1 |
0.3%
|
|
| 50 | 38 |
11.7%
|
|
| 52 | 1 |
0.3%
|
|
| 60 | 4 |
1.2%
|
|
| 65 | 1 |
0.3%
|
|
| 70 | 12 |
3.7%
|
|
| 75 | 1 |
0.3%
|
|
| 80 | 12 |
3.7%
|
|
| 90 | 5 |
1.5%
|
|
| 100 | 177 |
54.5%
|
|
| Sysmiss | 385 |