Value | Category | Cases | |
---|---|---|---|
99 | Missing | 0 |
0%
|
2005 | 1 |
20%
|
|
2009 | 2 |
40%
|
|
2011 | 1 |
20%
|
|
2012 | 1 |
20%
|
|
Sysmiss | 1720 |