| Value | Category | Cases | |
|---|---|---|---|
| 1 | Month and year | 7055 |
96.5%
|
| 2 | From calendar | 15 |
0.2%
|
| 5 | Year | 226 |
3.1%
|
| 7 | Month | 0 |
0%
|
| 8 | None | 15 |
0.2%
|
| Sysmiss | 41896 |