| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 1 km | 19841 |
18.1%
|
| 2 | 1 -3 km | 25444 |
23.3%
|
| 3 | 3 -6 km | 17447 |
15.9%
|
| 4 | More than 6 km | 46659 |
42.7%
|
| Sysmiss | 85422 |