| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 1 month | 241 |
19.9%
|
| 2 | 1-2 months | 335 |
27.7%
|
| 3 | 3-5 months | 299 |
24.7%
|
| 4 | 6-11 months | 133 |
11%
|
| 5 | 1-2 years | 127 |
10.5%
|
| 6 | 3 years or more | 75 |
6.2%
|
| Sysmiss | 48444 |