| Value | Category | Cases | |
|---|---|---|---|
| 0 | 131 |
0.2%
|
|
| 1 | Less than 1 year | 6330 |
9.7%
|
| 2 | From 1 to 5 years | 32978 |
50.6%
|
| 3 | More than 5 years | 25759 |
39.5%
|
| 10 | 9 |
0%
|
|
| 20 | 1 |
0%
|
|
| 30 | 1 |
0%
|
|
| Sysmiss | 55667 |