| Value | Category | Cases | |
|---|---|---|---|
| 1 | WASA | 1835 |
84.6%
|
| 2 | DRWS | 139 |
6.4%
|
| 3 | Other | 65 |
3%
|
| 4 | Do not know | 130 |
6%
|
| Sysmiss | 11899 |