| Value | Category | Cases | |
|---|---|---|---|
| 1 | Month and year | 305 |
96.2%
|
| 2 | From calendar | 0 |
0%
|
| 5 | Year | 11 |
3.5%
|
| 7 | Month | 1 |
0.3%
|
| 8 | None | 0 |
0%
|
| Sysmiss | 4948 |