| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 81 |
1.5%
|
| 1 | Never, it always has enough on hand | 2531 |
47.3%
|
| 2 | Rarely | 2039 |
38.1%
|
| 3 | Sometimes | 565 |
10.6%
|
| 4 | Frequently, at least once every three months | 136 |
2.5%
|