| Value | Category | Cases | |
|---|---|---|---|
| 1 | ONLY THIS YEAR'S PRODUCTION | 217 |
31.4%
|
| 2 | ONLY PREVIOUS YEAR'S PRODUCTION | 146 |
21.1%
|
| 3 | MAINLY THIS YEAR'S PRODUCTION | 24 |
3.5%
|
| 4 | MAINLY LAST YEAR'S PRODUCTION | 196 |
28.4%
|
| Sysmiss | 108 |
15.6%
|