| Value | Category | Cases | |
|---|---|---|---|
| 1 | never, i always have enough on hand | 559 |
34.8%
|
| 2 | not very frequent, once every 6 months or so | 363 |
22.6%
|
| 3 | once every three months | 298 |
18.6%
|
| 4 | once a month or more frequent | 386 |
24%
|
| Sysmiss | 1533 |