| Value | Category | Cases | |
|---|---|---|---|
| 0 | <12 months | 407 |
14.9%
|
| 1 | 1 year | 410 |
15%
|
| 2 | 2 years | 610 |
22.3%
|
| 3 | 3 years | 475 |
17.4%
|
| 4 | 4 years | 231 |
8.5%
|
| 5 | 5 years | 369 |
13.5%
|
| 6 | 6+ years | 142 |
5.2%
|
| 7 | Non-numeric | 25 |
0.9%
|
| 8 | Don't know | 63 |
2.3%
|
| 9 | 9 | ||
| Sysmiss | 2524 |