Value | Category | Cases | |
---|---|---|---|
-99 | DK | 0 |
0%
|
-88 | Missing | 0 |
0%
|
-77 | NA | 62 |
4.5%
|
1990 | 2 |
0.1%
|
|
1995 | 1 |
0.1%
|
|
1996 | 6 |
0.4%
|
|
1997 | 62 |
4.5%
|
|
1998 | 131 |
9.4%
|
|
1999 | 217 |
15.6%
|
|
2000 | 676 |
48.7%
|
|
2001 | 232 |
16.7%
|
|
Sysmiss | 188 |