| Value | Category | Cases | |
|---|---|---|---|
| 1 | Within the last 12 months | 47 |
4.7%
|
| 2 | 1 - 2 years ago | 64 |
6.4%
|
| 3 | 2 - 3 years ago | 67 |
6.7%
|
| 4 | More than 3 years ago | 138 |
13.8%
|
| 5 | Never | 683 |
68.4%
|