| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 2 |
0.4%
|
| 1 | 265 |
51.5%
|
|
| 2 | 181 |
35.1%
|
|
| 3 | 43 |
8.3%
|
|
| 4 | 12 |
2.3%
|
|
| 5 | 6 |
1.2%
|
|
| 6 | 2 |
0.4%
|
|
| 7 | 3 |
0.6%
|
|
| 9 | 1 |
0.2%
|