| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 238 |
14.3%
|
| -7 | Does not apply (spontaneous) | 1298 |
78.1%
|
| 0 | 7 |
0.4%
|
|
| 5 | 2 |
0.1%
|
|
| 10 | 2 |
0.1%
|
|
| 15 | 1 |
0.1%
|
|
| 17 | 1 |
0.1%
|
|
| 20 | 5 |
0.3%
|
|
| 25 | 2 |
0.1%
|
|
| 30 | 6 |
0.4%
|
|
| 35 | 1 |
0.1%
|
|
| 40 | 6 |
0.4%
|
|
| 43 | 1 |
0.1%
|
|
| 45 | 1 |
0.1%
|
|
| 50 | 4 |
0.2%
|
|
| 60 | 8 |
0.5%
|
|
| 65 | 2 |
0.1%
|
|
| 70 | 9 |
0.5%
|
|
| 75 | 1 |
0.1%
|
|
| 80 | 8 |
0.5%
|
|
| 90 | 2 |
0.1%
|
|
| 100 | 58 |
3.5%
|