| Value | Category | Cases | |
|---|---|---|---|
| 0 | <12 months | 1340 |
19.7%
|
| 1 | 1 year | 459 |
6.7%
|
| 2 | 2 years | 911 |
13.4%
|
| 3 | 3 years | 1118 |
16.4%
|
| 4 | 4 years | 627 |
9.2%
|
| 5 | 5 years | 1181 |
17.3%
|
| 6 | 6+ years | 530 |
7.8%
|
| 7 | non-numeric | 83 |
1.2%
|
| 8 | don't know | 570 |
8.4%
|
| 11 | .Z | 30692 |