| Value | Category | Cases | |
|---|---|---|---|
| 1 | within the past year | 159 |
27.9%
|
| 2 | within the past 2 years | 132 |
23.2%
|
| 3 | within the past 3 years | 111 |
19.5%
|
| 4 | within the past 5 years | 156 |
27.4%
|
| 5 | 5 or more years ago | 1 |
0.2%
|
| 77 | don't know | 10 |
1.8%
|
| Sysmiss | 1199 |