| Value | Category | Cases | |
|---|---|---|---|
| 1 | Once a year | 128 |
60.7%
|
| 2 | Twice a year | 34 |
16.1%
|
| 3 | Three or more times a year | 1 |
0.5%
|
| 4 | Perennial crop | 48 |
22.7%
|
| Sysmiss | 179 |