| Value | Category | Cases | |
|---|---|---|---|
| 1 | month and year | 1569 |
71.1%
|
| 2 | from calendar | 0 |
0%
|
| 5 | year | 638 |
28.9%
|
| 7 | month | 0 |
0%
|
| 8 | none | 0 |
0%
|
| Sysmiss | 10708 |