| Value | Category | Cases | |
|---|---|---|---|
| 1980 | 1 |
0%
|
|
| 1981 | 2 |
0%
|
|
| 1982 | 2 |
0%
|
|
| 1983 | 6 |
0.1%
|
|
| 1984 | 10 |
0.1%
|
|
| 1985 | 20 |
0.2%
|
|
| 1986 | 33 |
0.3%
|
|
| 1987 | 55 |
0.5%
|
|
| 1988 | 77 |
0.7%
|
|
| 1989 | 85 |
0.8%
|
|
| 1990 | 123 |
1.1%
|
|
| 1991 | 118 |
1.1%
|
|
| 1992 | 177 |
1.7%
|
|
| 1993 | 151 |
1.4%
|
|
| 1994 | 157 |
1.5%
|
|
| 1995 | 167 |
1.6%
|
|
| 1996 | 199 |
1.9%
|
|
| 1997 | 224 |
2.1%
|
|
| 1998 | 222 |
2.1%
|
|
| 1999 | 279 |
2.6%
|
|
| 2000 | 287 |
2.7%
|
|
| 2001 | 222 |
2.1%
|
|
| 2002 | 249 |
2.3%
|
|
| 2003 | 275 |
2.6%
|
|
| 2004 | 288 |
2.7%
|
|
| 2005 | 256 |
2.4%
|
|
| 2006 | 279 |
2.6%
|
|
| 2007 | 290 |
2.7%
|
|
| 2008 | 302 |
2.8%
|
|
| 2009 | 295 |
2.8%
|
|
| 2010 | 320 |
3%
|
|
| 2011 | 285 |
2.7%
|
|
| 2012 | 340 |
3.2%
|
|
| 2013 | 262 |
2.4%
|
|
| 2014 | 290 |
2.7%
|
|
| 2015 | 305 |
2.8%
|
|
| 2016 | 281 |
2.6%
|
|
| 2017 | 292 |
2.7%
|
|
| 2018 | 381 |
3.6%
|
|
| 2019 | 23 |
0.2%
|
|
| 9997 | INCONSISTENT | 10 |
0.1%
|
| 9998 | DK | 10 |
0.1%
|
| 9999 | NO RESPONSE | 1 |
0%
|
| Sysmiss | 3052 |
28.5%
|