| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than One month | 79 |
1%
|
| 2 | 1- 2 months | 840 |
10.4%
|
| 3 | 3-6 Months | 1595 |
19.7%
|
| 4 | One Year | 2414 |
29.8%
|
| 5 | Two Years | 1005 |
12.4%
|
| 6 | Three years or more | 2178 |
26.9%
|
| Sysmiss | 68559 |