| Value |
Category |
| -9 |
don't know (spontaneous) |
| 1912 |
|
| 1994 |
|
| 1995 |
|
| 1996 |
|
| 1998 |
|
| 2001 |
|
| 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.
