| Value | Category | Cases | |
|---|---|---|---|
| 1 | Once | 48 |
62.3%
|
| 2 | Twice | 26 |
33.8%
|
| 3 | Tree crop | 2 |
2.6%
|
| 4 | 1 |
1.3%
|
|
| Sysmiss | 9 |