| Value | Category | Cases | |
|---|---|---|---|
| 1 | month and year | 1900 |
84.3%
|
| 2 | from calendar | 55 |
2.4%
|
| 5 | year | 298 |
13.2%
|
| 7 | month | 0 |
0%
|
| 8 | none | 0 |
0%
|
| Sysmiss | 9506 |