| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 1 |
1%
|
| 1 | Never, it always has enough on hand | 24 |
24.7%
|
| 2 | Rarely | 35 |
36.1%
|
| 3 | Sometimes | 31 |
32%
|
| 4 | Frequently, at least once every three months | 6 |
6.2%
|