| Value | Category | Cases | |
|---|---|---|---|
| 0 | <12 months | 2021 |
12.3%
|
| 1 | 1 year | 1084 |
6.6%
|
| 2 | 2 years | 1470 |
8.9%
|
| 3 | 3 years | 1336 |
8.1%
|
| 4 | 4 years | 1035 |
6.3%
|
| 5 | 5 years | 2093 |
12.7%
|
| 6 | 6+ years | 6493 |
39.5%
|
| 7 | non-numeric | 357 |
2.2%
|
| 8 | don't know | 569 |
3.5%
|
| Sysmiss | 22260 |