| Value | Category | Cases | |
|---|---|---|---|
| 0 | <12 months | 1670 |
29%
|
| 1 | 1 year | 338 |
5.9%
|
| 2 | 2 years | 1018 |
17.7%
|
| 3 | 3 years | 592 |
10.3%
|
| 4 | 4 years | 163 |
2.8%
|
| 5 | 5 years | 148 |
2.6%
|
| 6 | 6+ years | 111 |
1.9%
|
| 7 | Non-numeric | 1423 |
24.7%
|
| 8 | Don't know | 302 |
5.2%
|
| 9 | Missing | 3 | |
| Sysmiss | 2217 |