| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every season/every year | 1642 |
82.8%
|
| 2 | Only when there is a surplus | 65 |
3.3%
|
| 3 | Only in emergencies | 273 |
13.8%
|
| 99 | Other periods (specify) | 2 |
0.1%
|
| Sysmiss | 50951 |