| Value | Category | Cases | |
|---|---|---|---|
| 1 | 2 to 6 months ago | 224 |
10.5%
|
| 2 | 7 to 12 months ago | 187 |
8.7%
|
| 3 | More than 1 year ago | 357 |
16.7%
|
| 4 | Within the last month | 32 |
1.5%
|
| Missing value | 1341 |
62.6%
|