| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than one year | 43 |
3.6%
|
| 2 | One to two years | 58 |
4.8%
|
| 3 | Two to three years | 70 |
5.8%
|
| 4 | Four to five years | 84 |
7%
|
| 5 | Five to ten years | 186 |
15.5%
|
| 6 | Ten to twenty years | 233 |
19.5%
|
| 7 | More than twenty years | 523 |
43.7%
|