| Value | Category | Cases | |
|---|---|---|---|
| 0 | <12 months | 975 |
12.4%
|
| 1 | 1 year | 538 |
6.9%
|
| 2 | 2 years | 771 |
9.8%
|
| 3 | 3 years | 960 |
12.3%
|
| 4 | 4 years | 492 |
6.3%
|
| 5 | 5 years | 1665 |
21.2%
|
| 6 | 6+ years | 1914 |
24.4%
|
| 7 | non-numeric | 464 |
5.9%
|
| 8 | don't know | 57 |
0.7%
|
| Sysmiss | 22984 |