| Value | Category | Cases | |
|---|---|---|---|
| -2 | Refusal to answer | 3 |
1%
|
| -1 | Don't know | 10 |
3.4%
|
| 0 | 4 |
1.4%
|
|
| 2 | 1 |
0.3%
|
|
| 4 | 1 |
0.3%
|
|
| 5 | 2 |
0.7%
|
|
| 7 | 3 |
1%
|
|
| 10 | 18 |
6.1%
|
|
| 12 | 1 |
0.3%
|
|
| 14 | 2 |
0.7%
|
|
| 15 | 6 |
2%
|
|
| 16 | 2 |
0.7%
|
|
| 20 | 7 |
2.4%
|
|
| 21 | 2 |
0.7%
|
|
| 30 | 179 |
60.9%
|
|
| 31 | 9 |
3.1%
|
|
| 32 | 1 |
0.3%
|
|
| 60 | 21 |
7.1%
|
|
| 90 | 12 |
4.1%
|
|
| 99 | 10 |
3.4%
|
|
| Sysmiss | 1229 |