| Value | Category | Cases | |
|---|---|---|---|
| 1 | More than a year ago | 58 |
5.6%
|
| 2 | The same | 223 |
21.5%
|
| 3 | Less than a year ago | 603 |
58.2%
|
| 9 | Don’t know | 152 |
14.7%
|