Value | Category | Cases | |
---|---|---|---|
0 | 68 |
2.3%
|
|
1 | Before 1990 | 149 |
5.1%
|
2 | From 1990-95 | 110 |
3.8%
|
3 | since 1995 | 202 |
6.9%
|
4 | 2001-2002 | 58 |
2%
|
9 | Don't know | 23 |
0.8%
|
Sysmiss | 2323 |