| value | category | cases | |
|---|---|---|---|
| 0 | <12 months | 768 |
9.6%
|
| 1 | 1 year | 555 |
6.9%
|
| 2 | 2 years | 1397 |
17.4%
|
| 3 | 3 years | 2385 |
29.7%
|
| 4 | 4 years | 1403 |
17.5%
|
| 5 | 5 years | 819 |
10.2%
|
| 6 | 6+ years | 244 |
3%
|
| 7 | Non-numeric | 129 |
1.6%
|
| 8 | Don't know | 331 |
4.1%
|
| Sysmiss | 2614 |