Value |
Category |
-7 |
NA |
-6 |
NS |
1976 |
|
1991 |
|
1993 |
|
1994 |
|
1995 |
|
1996 |
|
1997 |
|
1998 |
|
1999 |
|
2000 |
|
2001 |
|
2002 |
|
2003 |
|
2004 |
|
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.