| Value | Category | Cases | |
|---|---|---|---|
| 1998 | 1 |
20%
|
|
| 2007 | 1 |
20%
|
|
| 2012 | 2 |
40%
|
|
| 2015 | 1 |
20%
|
|
| 2147483622 | Not applicable | 0 |
0%
|
| 2147483623 | Refusal | 0 |
0%
|
| 2147483624 | Don't know | 0 |
0%
|
| 2147483625 | No answer | 0 |
0%
|
| 10001 | .D | 10086 | |
| Sysmiss | 34296 |