| Value | Category | Cases | |
|---|---|---|---|
| 1 | Daily | 78 |
1.6%
|
| 2 | Weekly | 128 |
2.6%
|
| 3 | Monthly | 306 |
6.2%
|
| 4 | Annually | 323 |
6.5%
|
| 5 | After a certain period of time | 441 |
8.9%
|
| 6 | According to the harvest | 3563 |
71.6%
|
| 98 | Don’t know | 135 |
2.7%
|
| Sysmiss | 732 |