| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 5 |
1.6%
|
| 0 | 42 |
13.5%
|
|
| 1 | 24 |
7.7%
|
|
| 2 | 12 |
3.9%
|
|
| 3 | 3 |
1%
|
|
| 4 | 1 |
0.3%
|
|
| 7 | 1 |
0.3%
|
|
| 8 | 2 |
0.6%
|
|
| 10 | 3 |
1%
|
|
| 15 | 1 |
0.3%
|
|
| 16 | 1 |
0.3%
|
|
| 17 | 1 |
0.3%
|
|
| 20 | 2 |
0.6%
|
|
| 24 | 1 |
0.3%
|
|
| 25 | 5 |
1.6%
|
|
| 30 | 2 |
0.6%
|
|
| 33 | 4 |
1.3%
|
|
| 40 | 1 |
0.3%
|
|
| 49 | 1 |
0.3%
|
|
| 50 | 22 |
7.1%
|
|
| 51 | 1 |
0.3%
|
|
| 60 | 1 |
0.3%
|
|
| 67 | 1 |
0.3%
|
|
| 70 | 1 |
0.3%
|
|
| 75 | 4 |
1.3%
|
|
| 80 | 1 |
0.3%
|
|
| 90 | 1 |
0.3%
|
|
| 97 | 1 |
0.3%
|
|
| 99 | 1 |
0.3%
|
|
| 100 | 165 |
53.1%
|
|
| Sysmiss | 98 |