| Value | Category | Cases | |
|---|---|---|---|
| 1 | Daily | 136 |
6.3%
|
| 2 | Weekly | 106 |
4.9%
|
| 3 | Monthly | 368 |
17.1%
|
| 4 | Annually | 292 |
13.6%
|
| 5 | After a certain period of time | 1213 |
56.5%
|
| 6 | According to the harvest | 24 |
1.1%
|
| 98 | Don’t know | 9 |
0.4%
|
| Sysmiss | 3066 |