| Value | Category | Cases | |
|---|---|---|---|
| 1 | ONLY THIS YEAR'S PRODUCTION | 217 |
37.2%
|
| 2 | ONLY PREVIOUS YEAR'S PRODUCTION | 146 |
25%
|
| 3 | MAINLY THIS YEAR'S PRODUCTION | 24 |
4.1%
|
| 4 | MAINLY LAST YEAR'S PRODUCTION | 196 |
33.6%
|