| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 1 month | 58 |
2.9%
|
| 2 | 1 to 2 months | 84 |
4.3%
|
| 3 | 3 to 6 months | 165 |
8.4%
|
| 4 | 7 to 11 months | 229 |
11.6%
|
| 5 | 1-2 years | 587 |
29.8%
|
| 6 | 3 or more years | 850 |
43.1%
|
| Sysmiss | 41707 |