| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 59 |
16.4%
|
| -7 | Does not apply (spontaneous) | 83 |
23.1%
|
| 0 | 16 |
4.4%
|
|
| 1 | 1 |
0.3%
|
|
| 10 | 1 |
0.3%
|
|
| 15 | 1 |
0.3%
|
|
| 20 | 1 |
0.3%
|
|
| 30 | 2 |
0.6%
|
|
| 40 | 2 |
0.6%
|
|
| 50 | 17 |
4.7%
|
|
| 60 | 4 |
1.1%
|
|
| 70 | 6 |
1.7%
|
|
| 80 | 8 |
2.2%
|
|
| 90 | 8 |
2.2%
|
|
| 92 | 1 |
0.3%
|
|
| 95 | 1 |
0.3%
|
|
| 96 | 1 |
0.3%
|
|
| 100 | 148 |
41.1%
|