| Value | Category | Cases | |
|---|---|---|---|
| 1980 | 1 |
0%
|
|
| 1985 | 1 |
0%
|
|
| 1986 | 7 |
0.1%
|
|
| 1987 | 11 |
0.2%
|
|
| 1988 | 27 |
0.6%
|
|
| 1989 | 33 |
0.7%
|
|
| 1990 | 52 |
1.1%
|
|
| 1991 | 47 |
1%
|
|
| 1992 | 70 |
1.4%
|
|
| 1993 | 78 |
1.6%
|
|
| 1994 | 92 |
1.9%
|
|
| 1995 | 86 |
1.8%
|
|
| 1996 | 94 |
1.9%
|
|
| 1997 | 115 |
2.4%
|
|
| 1998 | 123 |
2.5%
|
|
| 1999 | 103 |
2.1%
|
|
| 2000 | 140 |
2.9%
|
|
| 2001 | 131 |
2.7%
|
|
| 2002 | 142 |
2.9%
|
|
| 2003 | 143 |
2.9%
|
|
| 2004 | 142 |
2.9%
|
|
| 2005 | 124 |
2.5%
|
|
| 2006 | 161 |
3.3%
|
|
| 2007 | 164 |
3.4%
|
|
| 2008 | 183 |
3.7%
|
|
| 2009 | 180 |
3.7%
|
|
| 2010 | 219 |
4.5%
|
|
| 2011 | 206 |
4.2%
|
|
| 2012 | 245 |
5%
|
|
| 2013 | 235 |
4.8%
|
|
| 2014 | 328 |
6.7%
|
|
| 2015 | 318 |
6.5%
|
|
| 2016 | 291 |
6%
|
|
| 2017 | 302 |
6.2%
|
|
| 2018 | 267 |
5.5%
|
|
| 2019 | 8 |
0.2%
|
|
| 9999 | NO RESPONSE | 18 |
0.4%
|