| Value | Category | Cases | |
|---|---|---|---|
| 1 | Within the past year | 510 |
54.5%
|
| 2 | Between 1 - 2 years | 158 |
16.9%
|
| 3 | Between 2 - 4 years | 134 |
14.3%
|
| 4 | More than 4 years ago | 107 |
11.4%
|
| 8 | Don't know | 4 |
0.4%
|
| 9 | No response | 23 |
2.5%
|
| Sysmiss | 1302 |