| Value | Category | Cases | |
|---|---|---|---|
| 1 | Within past 2 years | 1 |
1%
|
| 2 | Within past 3-5 years | 1 |
1%
|
| 3 | 6-10 years ago | 7 |
7.3%
|
| 4 | 11-15 years ago | 13 |
13.5%
|
| 5 | More than 15 years ago | 74 |
77.1%
|
| -4 | Not asked | 0 | |
| -3 | Not applicable (Born in this country) | 1910 | |
| -2 | NA | 2 | |
| -1 | DK | 0 |