| Value | Category | Cases | |
|---|---|---|---|
| 1985 | 1 |
25%
|
|
| 1995 | 1 |
25%
|
|
| 2007 | 1 |
25%
|
|
| 2009 | 1 |
25%
|
|
| 2147483622 | Not applicable | 0 |
0%
|
| 2147483623 | Refusal | 0 |
0%
|
| 2147483624 | Don't know | 0 |
0%
|
| 2147483625 | No answer | 0 |
0%
|
| 10001 | .D | 4867 | |
| Sysmiss | 31144 |