| Value | Category | Cases | |
|---|---|---|---|
| 1 | Within past 12 months | 3058 |
45.3%
|
| 2 | 1-5 years ago | 1450 |
21.5%
|
| 3 | Not within past 5 years | 395 |
5.8%
|
| 4 | Never | 1725 |
25.5%
|
| 5 | Uncertain | 128 |
1.9%
|
| Sysmiss | 7 |