| Value | Category | Cases | |
|---|---|---|---|
| 0 | <12 months | 2016 |
22.7%
|
| 1 | 1 year | 1001 |
11.2%
|
| 2 | 2 years | 1116 |
12.5%
|
| 3 | 3 years | 948 |
10.7%
|
| 4 | 4 years | 623 |
7%
|
| 5 | 5 years | 1216 |
13.7%
|
| 6 | 6+ years | 1547 |
17.4%
|
| 7 | non-numeric | 62 |
0.7%
|
| 8 | don't know | 371 |
4.2%
|
| Sysmiss | 53693 |