| Value | Category | Cases | |
|---|---|---|---|
| 0 | <12 months | 857 |
25.2%
|
| 1 | 1 year | 367 |
10.8%
|
| 2 | 2 years | 548 |
16.1%
|
| 3 | 3 years | 490 |
14.4%
|
| 4 | 4 years | 237 |
7%
|
| 5 | 5 years | 266 |
7.8%
|
| 6 | 6+ years | 240 |
7.1%
|
| 7 | non-numeric | 227 |
6.7%
|
| 8 | don't know | 164 |
4.8%
|
| Sysmiss | 11550 |