| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 29 |
0.9%
|
| 1 | Never, it always has enough on hand | 484 |
15.6%
|
| 2 | Rarely | 1242 |
40%
|
| 3 | Sometimes | 1084 |
34.9%
|
| 4 | Frequently, at least once every three months | 266 |
8.6%
|