| Value | Category | Cases | |
|---|---|---|---|
| 1 | In less than a year | 3 |
0.5%
|
| 2 | In 2-4 years | 13 |
2.2%
|
| 3 | In 5-9 years | 6 |
1%
|
| 4 | In 10 or more years | 6 |
1%
|
| 5 | Never | 221 |
38.2%
|
| 98 | Don't know | 330 |
57%
|
| Sysmiss | 24863 |