| Value | Category | Cases | |
|---|---|---|---|
| 0 | <12 months | 2605 |
18.9%
|
| 1 | 1 year | 834 |
6%
|
| 2 | 2 years | 1926 |
14%
|
| 3 | 3 years | 1968 |
14.3%
|
| 4 | 4 years | 1081 |
7.8%
|
| 5 | 5 years | 2580 |
18.7%
|
| 6 | 6+ years | 827 |
6%
|
| 7 | non-numeric | 1279 |
9.3%
|
| 8 | don't know | 703 |
5.1%
|
| Sysmiss | 24643 |