| Value | Category | Cases | |
|---|---|---|---|
| 1 | Within one year | 220 |
16.9%
|
| 2 | After 1 but before 2 yrs | 183 |
14%
|
| 3 | After 2 yrs | 742 |
56.9%
|
| 4 | Whenever it happens | 123 |
9.4%
|
| 5 | Other | 19 |
1.5%
|
| 8 | Not sure/don't know | 18 |
1.4%
|