Value |
Category |
1966 |
|
1977 |
|
1979 |
|
1984 |
|
1990 |
|
1997 |
|
3333 |
Missing |
5555 |
Not Applicable |
8888 |
Refused |
9999 |
Don't Know |
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.