| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 1 yr | 16 |
0.2%
|
| 2 | 1-4 yrs | 59 |
0.8%
|
| 3 | 5-9 yrs | 42 |
0.5%
|
| 4 | 10+ yrs | 156 |
2%
|
| Sysmiss | 7436 |