| Value | Category | Cases | |
|---|---|---|---|
| 0 | <12 months | 133 |
24%
|
| 1 | 1 year | 57 |
10.3%
|
| 2 | 2 years | 89 |
16.1%
|
| 3 | 3 years | 103 |
18.6%
|
| 4 | 4 years | 48 |
8.7%
|
| 5 | 5 years | 94 |
17%
|
| 6 | 6+ years | 17 |
3.1%
|
| 7 | Non-numeric | 3 |
0.5%
|
| 8 | Don't know | 10 |
1.8%
|