| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 3 month ago | 452 |
12.2%
|
| 2 | 4-6 Months ago | 304 |
8.2%
|
| 3 | 7-12 months ago | 273 |
7.4%
|
| 4 | More than a year ago | 639 |
17.2%
|
| 5 | Missing | 3 |
0.1%
|
| 8 | Don't know | 3 |
0.1%
|
| 9 | Not applicable | 2031 |
54.8%
|
| Sysmiss | 1299 |