| Value | Category | Cases | |
|---|---|---|---|
| 1 | month | 1094 |
85.5%
|
| 2 | 3 months | 68 |
5.3%
|
| 3 | 6 months | 75 |
5.9%
|
| 4 | year | 42 |
3.3%
|
| Sysmiss | 47907 |