| Value | Category | Cases | |
|---|---|---|---|
| 1 | between 5 to 9 years | 2514 |
20.2%
|
| 2 | between 10 to 20 years | 2564 |
20.7%
|
| 3 | more than 20 years | 1847 |
14.9%
|
| 4 | like any other person | 2755 |
22.2%
|
| 8 | don't know | 2735 |
22%
|
| Sysmiss | 500 |