| Value | Category | Cases | |
|---|---|---|---|
| 1 | <1yr | 5 |
6.3%
|
| 2 | 1-2yrs | 12 |
15.2%
|
| 3 | 3-5yrs | 18 |
22.8%
|
| 4 | 5+yrs | 44 |
55.7%
|
| Sysmiss | 392 |