| Value | Category | Cases | |
|---|---|---|---|
| 1978 | 1 |
0%
|
|
| 1979 | 1 |
0%
|
|
| 1980 | 1 |
0%
|
|
| 1983 | 5 |
0%
|
|
| 1984 | 1 |
0%
|
|
| 1985 | 9 |
0.1%
|
|
| 1986 | 14 |
0.1%
|
|
| 1987 | 11 |
0.1%
|
|
| 1988 | 31 |
0.3%
|
|
| 1989 | 23 |
0.2%
|
|
| 1990 | 61 |
0.6%
|
|
| 1991 | 42 |
0.4%
|
|
| 1992 | 77 |
0.7%
|
|
| 1993 | 56 |
0.5%
|
|
| 1994 | 65 |
0.6%
|
|
| 1995 | 118 |
1.1%
|
|
| 1996 | 104 |
1%
|
|
| 1997 | 129 |
1.2%
|
|
| 1998 | 196 |
1.9%
|
|
| 1999 | 241 |
2.3%
|
|
| 2000 | 376 |
3.6%
|
|
| 2001 | 189 |
1.8%
|
|
| 2002 | 263 |
2.5%
|
|
| 2003 | 252 |
2.4%
|
|
| 2004 | 306 |
2.9%
|
|
| 2005 | 354 |
3.4%
|
|
| 2006 | 304 |
2.9%
|
|
| 2007 | 389 |
3.7%
|
|
| 2008 | 452 |
4.3%
|
|
| 2009 | 449 |
4.3%
|
|
| 2010 | 582 |
5.5%
|
|
| 2011 | 469 |
4.4%
|
|
| 2012 | 508 |
4.8%
|
|
| 2013 | 452 |
4.3%
|
|
| 2014 | 409 |
3.9%
|
|
| 2015 | 438 |
4.2%
|
|
| 2016 | 396 |
3.8%
|
|
| 2017 | 375 |
3.6%
|
|
| 2018 | 375 |
3.6%
|
|
| 2019 | 205 |
1.9%
|
|
| 2020 | 5 |
0%
|
|
| 9997 | Inconsistent | 3 |
0%
|
| 9998 | DK | 1792 |
17%
|
| 9999 | NO RESPONSE | 11 |
0.1%
|
| Sysmiss | 10108 |