| Value | Category | Cases | |
|---|---|---|---|
| 1 | one year | 1365 |
31.3%
|
| 2 | six months | 480 |
11%
|
| 3 | one month | 1815 |
41.6%
|
| 4 | two weeks | 135 |
3.1%
|
| 5 | one week | 425 |
9.7%
|
| 6 | Other | 140 |
3.2%
|
| Sysmiss | 12600 |