| Value |
Category |
| -9 |
don't know |
| 1960 |
|
| 1972 |
|
| 1977 |
|
| 1979 |
|
| 1987 |
|
| 1990 |
|
| 1993 |
|
| 1994 |
|
| 1995 |
|
| 1996 |
|
| 1998 |
|
| 1999 |
|
| 2000 |
|
| 2003 |
|
| 2004 |
|
| 2005 |
|
| 2006 |
|
| 2007 |
|
| 2008 |
|
| Sysmiss |
|
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.
