Value | Category | Cases | |
---|---|---|---|
-9 | NIU (not in universe) | 2122 |
91.9%
|
2016 | 6 |
0.3%
|
|
2017 | 180 |
7.8%
|
|
9999995 | missing:impute | 1 |
0%
|
Sysmiss | 474 |