| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 1 month | 47 |
1.2%
|
| 2 | 1 to 3 months, | 93 |
2.4%
|
| 3 | 4 to 6 months | 169 |
4.3%
|
| 4 | 7 to 11months, | 261 |
6.7%
|
| 5 | 1 to 2 years | 1031 |
26.4%
|
| 6 | 3 or more years | 2302 |
59%
|
| Sysmiss | 39761 |