| value | category | cases | |
|---|---|---|---|
| 0 | <12 months | 1598 |
17.3%
|
| 1 | 1 year | 552 |
6%
|
| 2 | 2 years | 1168 |
12.7%
|
| 3 | 3 years | 1801 |
19.5%
|
| 4 | 4 years | 1075 |
11.6%
|
| 5 | 5 years | 702 |
7.6%
|
| 6 | 6+ years | 339 |
3.7%
|
| 7 | Non-numeric | 1539 |
16.7%
|
| 8 | Don't know | 454 |
4.9%
|
| 9 | 1 | ||
| Sysmiss | 3248 |