| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than six months ago | 110 |
6.2%
|
| 2 | More than one year ago | 999 |
56.2%
|
| 3 | More than six months ago | 213 |
12%
|
| 4 | Two years ago | 453 |
25.5%
|
| Missing value | 3 |
0.2%
|