| Value | Category | Cases | |
|---|---|---|---|
| 1980 | 2 |
0%
|
|
| 1983 | 1 |
0%
|
|
| 1984 | 2 |
0%
|
|
| 1985 | 2 |
0%
|
|
| 1986 | 5 |
0%
|
|
| 1987 | 1 |
0%
|
|
| 1988 | 21 |
0%
|
|
| 1989 | 13 |
0%
|
|
| 1990 | 23 |
0%
|
|
| 1991 | 20 |
0%
|
|
| 1992 | 38 |
0.1%
|
|
| 1993 | 53 |
0.1%
|
|
| 1994 | 66 |
0.1%
|
|
| 1995 | 113 |
0.2%
|
|
| 1996 | 163 |
0.2%
|
|
| 1997 | 202 |
0.3%
|
|
| 1998 | 296 |
0.4%
|
|
| 1999 | 307 |
0.5%
|
|
| 2000 | 588 |
0.9%
|
|
| 2001 | 468 |
0.7%
|
|
| 2002 | 683 |
1%
|
|
| 2003 | 777 |
1.2%
|
|
| 2004 | 1069 |
1.6%
|
|
| 2005 | 1037 |
1.6%
|
|
| 2006 | 1440 |
2.2%
|
|
| 2007 | 1333 |
2%
|
|
| 2008 | 1893 |
2.9%
|
|
| 2009 | 1782 |
2.7%
|
|
| 2010 | 2570 |
3.9%
|
|
| 2011 | 2835 |
4.3%
|
|
| 2012 | 3651 |
5.5%
|
|
| 2013 | 4075 |
6.2%
|
|
| 2014 | 4863 |
7.4%
|
|
| 2015 | 6430 |
9.7%
|
|
| 2016 | 8383 |
12.7%
|
|
| 2017 | 8996 |
13.6%
|
|
| 2018 | 11213 |
17%
|
|
| 2019 | 624 |
0.9%
|
|
| 9997 | Inconsistent | 41 |
0.1%
|
| 9999 | NO RESPONSE | 1 |
0%
|