| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than a month | 8 |
0.8%
|
| 2 | 1-5 months | 69 |
6.9%
|
| 3 | 6-12 months | 77 |
7.7%
|
| 4 | Over a year | 9 |
0.9%
|
| 88 | N/A | 833 |
83.6%
|
| Sysmiss | 585 |