| Value | Category | Cases | |
|---|---|---|---|
| 0 | <12 months | 160 |
22.4%
|
| 1 | 1 year | 72 |
10.1%
|
| 2 | 2 years | 134 |
18.8%
|
| 3 | 3 years | 108 |
15.1%
|
| 4 | 4 years | 33 |
4.6%
|
| 5 | 5 years | 121 |
16.9%
|
| 6 | 6+ years | 45 |
6.3%
|
| 7 | Non-numeric | 23 |
3.2%
|
| 8 | Don't know | 18 |
2.5%
|
| Sysmiss | 717 |