| Value | Category | Cases | |
|---|---|---|---|
| 1 | Fully used | 652 |
3.3%
|
| 2 | Used to a large extent | 1519 |
7.8%
|
| 3 | Used to a moderate extent | 2902 |
14.9%
|
| 4 | Used to a small extent | 6185 |
31.7%
|
| 5 | Not used at all | 4873 |
25%
|
| 6 | Don't know | 3374 |
17.3%
|