| Value | Category | Cases | |
|---|---|---|---|
| 1977 | 1 |
1.1%
|
|
| 1979 | 1 |
1.1%
|
|
| 1989 | 1 |
1.1%
|
|
| 1993 | 1 |
1.1%
|
|
| 1995 | 1 |
1.1%
|
|
| 1997 | 1 |
1.1%
|
|
| 2000 | 2 |
2.2%
|
|
| 2001 | 1 |
1.1%
|
|
| 2003 | 2 |
2.2%
|
|
| 2004 | 1 |
1.1%
|
|
| 2005 | 1 |
1.1%
|
|
| 2007 | 2 |
2.2%
|
|
| 2008 | 3 |
3.3%
|
|
| 2009 | 4 |
4.3%
|
|
| 2012 | 3 |
3.3%
|
|
| 2013 | 1 |
1.1%
|
|
| 2014 | 1 |
1.1%
|
|
| 3333 | Missing | 1 |
1.1%
|
| 5555 | Not Applicable | 0 |
0%
|
| 8888 | Refused | 1 |
1.1%
|
| 9999 | Don't know | 63 |
68.5%
|
| Sysmiss | 26712 |