| Value | Category | Cases | |
|---|---|---|---|
| 1987 | 3 |
0%
|
|
| 1988 | 2 |
0%
|
|
| 1989 | 1 |
0%
|
|
| 1990 | 8 |
0.1%
|
|
| 1991 | 5 |
0%
|
|
| 1992 | 18 |
0.1%
|
|
| 1993 | 31 |
0.2%
|
|
| 1994 | 31 |
0.2%
|
|
| 1995 | 52 |
0.4%
|
|
| 1996 | 63 |
0.5%
|
|
| 1997 | 60 |
0.5%
|
|
| 1998 | 101 |
0.8%
|
|
| 1999 | 109 |
0.9%
|
|
| 2000 | 163 |
1.3%
|
|
| 2001 | 170 |
1.3%
|
|
| 2002 | 166 |
1.3%
|
|
| 2003 | 223 |
1.8%
|
|
| 2004 | 249 |
2%
|
|
| 2005 | 267 |
2.1%
|
|
| 2006 | 348 |
2.7%
|
|
| 2007 | 393 |
3.1%
|
|
| 2008 | 474 |
3.7%
|
|
| 2009 | 444 |
3.5%
|
|
| 2010 | 653 |
5.1%
|
|
| 2011 | 635 |
5%
|
|
| 2012 | 667 |
5.2%
|
|
| 2013 | 729 |
5.7%
|
|
| 2014 | 950 |
7.5%
|
|
| 2015 | 1158 |
9.1%
|
|
| 2016 | 1398 |
11%
|
|
| 2017 | 1654 |
13%
|
|
| 2018 | 1517 |
11.9%
|
|
| 9999 | NO RESPONSE | 0 |
0%
|