| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 3 |
1.4%
|
| 1 | Never, it always has enough on hand | 29 |
13.2%
|
| 2 | Rarely | 86 |
39.3%
|
| 3 | Sometimes | 92 |
42%
|
| 4 | Frequently, at least once every three months | 9 |
4.1%
|