| Value | Category | Cases | |
|---|---|---|---|
| 1 | Daily | 4 |
0.5%
|
| 2 | Weekly | 15 |
1.8%
|
| 3 | Monthly | 74 |
9.1%
|
| 4 | Annually | 117 |
14.4%
|
| 5 | After a certain period of time | 503 |
61.7%
|
| 6 | According to the harvest | 70 |
8.6%
|
| 98 | Don’t know | 32 |
3.9%
|
| Sysmiss | 4891 |