| Value | Category | Cases | |
|---|---|---|---|
| 0 | never | 1066 |
7.6%
|
| 1 | 1969 |
14.1%
|
|
| 2 | 1512 |
10.8%
|
|
| 3 | 847 |
6.1%
|
|
| 4 | 571 |
4.1%
|
|
| 5 | 312 |
2.2%
|
|
| 6 | 206 |
1.5%
|
|
| 7 | 65 |
0.5%
|
|
| 8 | 86 |
0.6%
|
|
| 9 | 27 |
0.2%
|
|
| 10 | 151 |
1.1%
|
|
| 11 | 11 |
0.1%
|
|
| 12 | 99 |
0.7%
|
|
| 13 | 5 |
0%
|
|
| 14 | 5 |
0%
|
|
| 15 | 25 |
0.2%
|
|
| 16 | 5 |
0%
|
|
| 17 | 3 |
0%
|
|
| 18 | 7 |
0.1%
|
|
| 20 | 32 |
0.2%
|
|
| 24 | 4 |
0%
|
|
| 25 | 5 |
0%
|
|
| 27 | 1 |
0%
|
|
| 28 | 1 |
0%
|
|
| 30 | 5 |
0%
|
|
| 32 | 1 |
0%
|
|
| 36 | 1 |
0%
|
|
| 45 | 1 |
0%
|
|
| 48 | 1 |
0%
|
|
| 52 | 4 |
0%
|
|
| -8 | other error | 0 |
0%
|
| -7 | filter error | 0 |
0%
|
| -3 | inapplicable | 6907 |
49.5%
|
| -2 | no answer | 6 |
0%
|
| -1 | does not know | 9 |
0.1%
|