| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 11 |
2%
|
| 1 | Never, it always has enough on hand | 220 |
39.7%
|
| 2 | Rarely | 237 |
42.8%
|
| 3 | Frequently, at least once every three months | 86 |
15.5%
|