| Value | Category | Cases | |
|---|---|---|---|
| 1 | Within the last 12 months | 1625 |
6.5%
|
| 2 | 1 - 2 years ago | 795 |
3.2%
|
| 3 | 2 - 3 years ago | 627 |
2.5%
|
| 4 | More than 3 years ago | 2527 |
10.2%
|
| 5 | Never | 19239 |
77.5%
|