| Value | Category | Cases | |
|---|---|---|---|
| 1 | Once a year | 85 |
53.1%
|
| 2 | Twice a year | 31 |
19.4%
|
| 3 | Three or more times a year | 1 |
0.6%
|
| 4 | Perennial crop | 43 |
26.9%
|
| Sysmiss | 230 |