| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 6 |
3.1%
|
| 0 | 6 |
3.1%
|
|
| 1 | 5 |
2.6%
|
|
| 2 | 2 |
1%
|
|
| 3 | 2 |
1%
|
|
| 4 | 1 |
0.5%
|
|
| 5 | 1 |
0.5%
|
|
| 10 | 5 |
2.6%
|
|
| 18 | 1 |
0.5%
|
|
| 20 | 3 |
1.5%
|
|
| 30 | 2 |
1%
|
|
| 40 | 2 |
1%
|
|
| 50 | 4 |
2.1%
|
|
| 60 | 6 |
3.1%
|
|
| 70 | 4 |
2.1%
|
|
| 75 | 1 |
0.5%
|
|
| 80 | 3 |
1.5%
|
|
| 90 | 4 |
2.1%
|
|
| 95 | 1 |
0.5%
|
|
| 100 | 136 |
69.7%
|
|
| Sysmiss | 170 |