| Value | Category | Cases | |
|---|---|---|---|
| 0 | none | 1636 |
33.5%
|
| 1 | 1169 |
24%
|
|
| 2 | 1104 |
22.6%
|
|
| 3 | 479 |
9.8%
|
|
| 4 | 251 |
5.1%
|
|
| 5 | 122 |
2.5%
|
|
| 6 | 64 |
1.3%
|
|
| 7 | 24 |
0.5%
|
|
| 8 | 10 |
0.2%
|
|
| 9 | 3 |
0.1%
|
|
| 10 | 8 |
0.2%
|
|
| 12 | 2 |
0%
|
|
| 13 | 2 |
0%
|
|
| 14 | 1 |
0%
|
|
| 15 | 1 |
0%
|
|
| 16 | 1 |
0%
|
|
| 18 | 1 |
0%
|
|
| 20 | 2 |
0%
|
|
| 77 | refused | 0 |
0%
|
| 88 | don't know | 0 |
0%
|
| 99 | missing | 0 |
0%
|
| Sysmiss | 90 |