| Value | Category | Cases | |
|---|---|---|---|
| 1 | up to 6 months | 42 |
6%
|
| 2 | 7-12 months | 53 |
7.6%
|
| 3 | 1-3 years | 193 |
27.7%
|
| 4 | more than 3 years | 408 |
58.6%
|