| Value | Category | Cases | |
|---|---|---|---|
| -2 | don't know | 17 |
19.1%
|
| -1 | refuse | 0 |
0%
|
| 3 | 2 |
2.2%
|
|
| 5 | 1 |
1.1%
|
|
| 6 | 1 |
1.1%
|
|
| 10 | 4 |
4.5%
|
|
| 12 | 1 |
1.1%
|
|
| 15 | 4 |
4.5%
|
|
| 18 | 3 |
3.4%
|
|
| 20 | 11 |
12.4%
|
|
| 21 | 1 |
1.1%
|
|
| 22 | 1 |
1.1%
|
|
| 23 | 1 |
1.1%
|
|
| 24 | 4 |
4.5%
|
|
| 25 | 1 |
1.1%
|
|
| 26 | 1 |
1.1%
|
|
| 27 | 1 |
1.1%
|
|
| 30 | 10 |
11.2%
|
|
| 35 | 1 |
1.1%
|
|
| 40 | 4 |
4.5%
|
|
| 45 | 2 |
2.2%
|
|
| 48 | 3 |
3.4%
|
|
| 50 | 4 |
4.5%
|
|
| 55 | 1 |
1.1%
|
|
| 60 | 4 |
4.5%
|
|
| 70 | 1 |
1.1%
|
|
| 100 | 1 |
1.1%
|
|
| 120 | 2 |
2.2%
|
|
| 150 | 1 |
1.1%
|
|
| 600 | 1 |
1.1%
|
|
| Sysmiss | 960 |