| Value | Category | Cases | |
|---|---|---|---|
| 1 | Within the last month | 1503 |
61.3%
|
| 2 | 1-2 months ago | 272 |
11.1%
|
| 3 | 3-5 months ago | 204 |
8.3%
|
| 4 | 6-12 months ago | 182 |
7.4%
|
| 5 | More than 1 year ago | 290 |
11.8%
|
| Sysmiss | 1487 |