| Value | Category | Cases | |
|---|---|---|---|
| 1 | Once a year | 250 |
64.8%
|
| 2 | Twice a year | 74 |
19.2%
|
| 3 | Three or more times a year | 2 |
0.5%
|
| 4 | Perennial crop | 60 |
15.5%
|
| Sysmiss | 4 |