| Value | Category | Cases | |
|---|---|---|---|
| 1 | Month and year | 4476 |
95.2%
|
| 2 | From calendar | 0 |
0%
|
| 5 | Year | 226 |
4.8%
|
| 7 | Month | 0 |
0%
|
| 8 | None | 1 |
0%
|
| Sysmiss | 44504 |