| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 1 |
0.7%
|
| 1 | Never, it always has enough on hand | 92 |
68.1%
|
| 2 | Rarely | 22 |
16.3%
|
| 3 | Sometimes | 19 |
14.1%
|
| 4 | Frequently, at least once every three months | 1 |
0.7%
|