| Value | Category | Cases | |
|---|---|---|---|
| 1976 | 1 |
0%
|
|
| 1982 | 2 |
0%
|
|
| 1985 | 2 |
0%
|
|
| 1986 | 2 |
0%
|
|
| 1990 | 6 |
0%
|
|
| 1992 | 2 |
0%
|
|
| 1993 | 4 |
0%
|
|
| 1994 | 2 |
0%
|
|
| 1996 | 2 |
0%
|
|
| 1997 | 4 |
0%
|
|
| 1998 | 6 |
0%
|
|
| 1999 | 4 |
0%
|
|
| 2000 | 13 |
0%
|
|
| 2002 | 8 |
0%
|
|
| 2003 | 10 |
0%
|
|
| 2004 | 10 |
0%
|
|
| 2005 | 18 |
0%
|
|
| 2006 | 9 |
0%
|
|
| 2007 | 23 |
0.1%
|
|
| 2008 | 13 |
0%
|
|
| 2009 | 15 |
0%
|
|
| 2010 | 49 |
0.1%
|
|
| 2011 | 14 |
0%
|
|
| 2012 | 17 |
0%
|
|
| 2013 | 33 |
0.1%
|
|
| 2014 | 35 |
0.1%
|
|
| 2015 | 97 |
0.2%
|
|
| 2016 | 72 |
0.2%
|
|
| 2017 | 83 |
0.2%
|
|
| 2018 | 122 |
0.3%
|
|
| 2019 | 134 |
0.3%
|
|
| 2020 | 96 |
0.2%
|
|
| z | Not applicable | 36436 |
90.6%
|
| d | Inconsistency set to missing | 2761 |
6.9%
|
| a | Don't know | 71 |
0.2%
|
| b | Refused to answer | 59 |
0.1%
|