| Value | Category | Cases | |
|---|---|---|---|
| 1971 | 1 |
1.2%
|
|
| 1977 | 1 |
1.2%
|
|
| 1978 | 1 |
1.2%
|
|
| 1979 | 1 |
1.2%
|
|
| 1980 | 1 |
1.2%
|
|
| 1989 | 1 |
1.2%
|
|
| 1995 | 1 |
1.2%
|
|
| 1997 | 1 |
1.2%
|
|
| 2001 | 1 |
1.2%
|
|
| 2002 | 1 |
1.2%
|
|
| 2004 | 1 |
1.2%
|
|
| 2005 | 1 |
1.2%
|
|
| 2006 | 1 |
1.2%
|
|
| 2007 | 1 |
1.2%
|
|
| 2008 | 3 |
3.5%
|
|
| 2009 | 2 |
2.3%
|
|
| 2010 | 1 |
1.2%
|
|
| 2012 | 1 |
1.2%
|
|
| 3333 | Missing | 1 |
1.2%
|
| 5555 | Not Applicable | 0 |
0%
|
| 8888 | Refused | 0 |
0%
|
| 9999 | Don't know | 64 |
74.4%
|
| Sysmiss | 22371 |