| Value | Category | Cases | |
|---|---|---|---|
| 0 | 42 |
84%
|
|
| 1 | 2 |
4%
|
|
| 3 | 1 |
2%
|
|
| 5 | 2 |
4%
|
|
| 15 | 2 |
4%
|
|
| 20 | 1 |
2%
|
|
| 77 | refuse | 0 |
0%
|
| 88 | dont know | 0 |
0%
|
| 99 | missing | 0 |
0%
|
| Sysmiss | 4920 |