| Value |
Category |
| -99 |
Don't know |
| -97 |
Not specified by supervisor/interviewer |
| -95 |
|
| 1991 |
|
| 1992 |
|
| 1993 |
|
| 1994 |
|
| 1995 |
|
| 1996 |
|
| 1997 |
|
| 1998 |
|
| 2000 |
|
| 2001 |
|
| 2002 |
|
| 2004 |
|
| 2007 |
|
| 2010 |
|
Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.