| Value | Category | Cases | |
|---|---|---|---|
| 0 | <12 months | 6071 |
26.7%
|
| 1 | 1 year | 1545 |
6.8%
|
| 2 | 2 years | 4319 |
19%
|
| 3 | 3 years | 2708 |
11.9%
|
| 4 | 4 years | 780 |
3.4%
|
| 5 | 5 years | 498 |
2.2%
|
| 6 | 6+ years | 478 |
2.1%
|
| 7 | Non-numeric | 5387 |
23.7%
|
| 8 | Don't know | 920 |
4.1%
|
| 9 | Missing | 56 | |
| Sysmiss | 11834 |