| Value | Category | Cases | |
|---|---|---|---|
| 0 | Not applicable | 19 |
3%
|
| 1 | One outlet | 475 |
74.5%
|
| 2 | Two outlets | 19 |
3%
|
| 3 | Three or more outlets | 85 |
13.3%
|
| 9 | Not known | 40 |
6.3%
|