| Value | Category | Cases | |
|---|---|---|---|
| 1 | none | 226 |
10.3%
|
| 2 | 1 | 144 |
6.5%
|
| 3 | 2 | 361 |
16.4%
|
| 4 | 3 | 461 |
21%
|
| 5 | 4 | 250 |
11.4%
|
| 6 | 5 | 310 |
14.1%
|
| 7 | 6 | 185 |
8.4%
|
| 8 | 7 | 80 |
3.6%
|
| 9 | 8 | 70 |
3.2%
|
| 10 | 9 | 5 |
0.2%
|
| 11 | 10 | 81 |
3.7%
|
| 12 | refused | 2 |
0.1%
|
| 13 | don't know | 25 |
1.1%
|