| Value | Category | Cases | |
|---|---|---|---|
| 0 | 124 |
66%
|
|
| 1 | 8 |
4.3%
|
|
| 2 | 2 |
1.1%
|
|
| 3 | 1 |
0.5%
|
|
| 4 | 2 |
1.1%
|
|
| 10 | 1 |
0.5%
|
|
| 15 | 2 |
1.1%
|
|
| 20 | 1 |
0.5%
|
|
| 24 | 1 |
0.5%
|
|
| 40 | 1 |
0.5%
|
|
| 50 | 20 |
10.6%
|
|
| 77 | Don't know | 25 |
13.3%
|
| Sysmiss | 967 |