| Value | Category | Cases | |
|---|---|---|---|
| -5 | Missing; Unknown | 0 |
0%
|
| -4 | Not asked | 0 |
0%
|
| -3 | Not applicable | 0 |
0%
|
| -2 | No answer | 0 |
0%
|
| -1 | Dont know | 0 |
0%
|
| 1 | 1981-83 | 0 |
0%
|
| 2 | 1989-91 | 0 |
0%
|
| 3 | 1995-97 | 0 |
0%
|
| 4 | 1999-2001 | 0 |
0%
|
| 5 | 2005-2007 | 83975 |
100%
|