| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 31 |
8.6%
|
| -7 | Does not apply (spontaneous) | 188 |
52.2%
|
| 0 | 63 |
17.5%
|
|
| 7 | 1 |
0.3%
|
|
| 10 | 2 |
0.6%
|
|
| 15 | 2 |
0.6%
|
|
| 20 | 5 |
1.4%
|
|
| 30 | 4 |
1.1%
|
|
| 40 | 1 |
0.3%
|
|
| 45 | 1 |
0.3%
|
|
| 50 | 5 |
1.4%
|
|
| 60 | 2 |
0.6%
|
|
| 70 | 2 |
0.6%
|
|
| 80 | 5 |
1.4%
|
|
| 90 | 4 |
1.1%
|
|
| 91 | 1 |
0.3%
|
|
| 99 | 1 |
0.3%
|
|
| 100 | 42 |
11.7%
|