| Value |
Category |
| -95 |
|
| -90 |
Not specified by supervisor/interviewer |
| 1991 |
|
| 1996 |
|
| 1997 |
|
| 1998 |
|
| 1999 |
|
| 2000 |
|
| 2001 |
|
| 2002 |
|
| 2004 |
|
| 2007 |
|
| 2009 |
|
| 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.