| Value | Category | Cases | |
|---|---|---|---|
| 1 | month | 95 |
69.3%
|
| 2 | 3 months | 14 |
10.2%
|
| 3 | 6 months | 8 |
5.8%
|
| 4 | year | 20 |
14.6%
|
| Sysmiss | 49049 |