| Value | Category | Cases | |
|---|---|---|---|
| 1985 | 1 |
0%
|
|
| 1986 | 4 |
0%
|
|
| 1988 | 10 |
0.1%
|
|
| 1989 | 11 |
0.1%
|
|
| 1990 | 16 |
0.1%
|
|
| 1991 | 30 |
0.2%
|
|
| 1992 | 46 |
0.3%
|
|
| 1993 | 62 |
0.4%
|
|
| 1994 | 50 |
0.4%
|
|
| 1995 | 65 |
0.5%
|
|
| 1996 | 95 |
0.7%
|
|
| 1997 | 94 |
0.7%
|
|
| 1998 | 159 |
1.1%
|
|
| 1999 | 169 |
1.2%
|
|
| 2000 | 155 |
1.1%
|
|
| 2001 | 202 |
1.5%
|
|
| 2002 | 246 |
1.8%
|
|
| 2003 | 196 |
1.4%
|
|
| 2004 | 263 |
1.9%
|
|
| 2005 | 245 |
1.8%
|
|
| 2006 | 287 |
2.1%
|
|
| 2007 | 351 |
2.5%
|
|
| 2008 | 405 |
2.9%
|
|
| 2009 | 352 |
2.5%
|
|
| 2010 | 422 |
3%
|
|
| 2011 | 547 |
3.9%
|
|
| 2012 | 798 |
5.7%
|
|
| 2013 | 1048 |
7.5%
|
|
| 2014 | 1315 |
9.5%
|
|
| 2015 | 1653 |
11.9%
|
|
| 2016 | 1788 |
12.9%
|
|
| 2017 | 1948 |
14%
|
|
| 2018 | 825 |
5.9%
|
|
| 9999 | No response | 32 |
0.2%
|