| Value | Category | Cases | |
|---|---|---|---|
| 1 | less than or equal to 6 months | 1460 |
3.7%
|
| 2 | more than 6 months but less than or equal to 1 year- | 958 |
2.4%
|
| 3 | more than 1 year but less than or equal to 2 years | 1992 |
5.1%
|
| 4 | more than 2 years but less than or equal to 3 years | 2851 |
7.2%
|
| 5 | more than three years | 32154 |
81.6%
|
| Sysmiss | 385511 |