| Value | Category | Cases | |
|---|---|---|---|
| 1 | Daily | 19 |
3.5%
|
| 2 | Weekly | 39 |
7.2%
|
| 3 | Monthly | 136 |
25.2%
|
| 4 | Annually | 62 |
11.5%
|
| 5 | After a certain period of time | 222 |
41.2%
|
| 6 | According to the harvest | 6 |
1.1%
|
| 98 | Don’t know | 55 |
10.2%
|
| Sysmiss | 4589 |