| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 97 |
36.2%
|
| 0 | 36 |
13.4%
|
|
| 1 | 12 |
4.5%
|
|
| 2 | 9 |
3.4%
|
|
| 5 | 15 |
5.6%
|
|
| 7 | 1 |
0.4%
|
|
| 8 | 2 |
0.7%
|
|
| 10 | 26 |
9.7%
|
|
| 15 | 11 |
4.1%
|
|
| 20 | 20 |
7.5%
|
|
| 25 | 8 |
3%
|
|
| 30 | 6 |
2.2%
|
|
| 35 | 2 |
0.7%
|
|
| 37 | 1 |
0.4%
|
|
| 40 | 3 |
1.1%
|
|
| 48 | 1 |
0.4%
|
|
| 50 | 2 |
0.7%
|
|
| 62 | 1 |
0.4%
|
|
| 70 | 2 |
0.7%
|
|
| 80 | 3 |
1.1%
|
|
| 83 | 1 |
0.4%
|
|
| 90 | 2 |
0.7%
|
|
| 95 | 1 |
0.4%
|
|
| 100 | 6 |
2.2%
|
|
| Sysmiss | 948 |