| Value | Category | Cases | |
|---|---|---|---|
| 1979 | 1 |
0%
|
|
| 1980 | 2 |
0%
|
|
| 1981 | 6 |
0%
|
|
| 1982 | 8 |
0%
|
|
| 1983 | 27 |
0.1%
|
|
| 1984 | 40 |
0.1%
|
|
| 1985 | 67 |
0.2%
|
|
| 1986 | 83 |
0.2%
|
|
| 1987 | 177 |
0.5%
|
|
| 1988 | 177 |
0.5%
|
|
| 1989 | 266 |
0.8%
|
|
| 1990 | 359 |
1%
|
|
| 1991 | 339 |
1%
|
|
| 1992 | 558 |
1.6%
|
|
| 1993 | 530 |
1.5%
|
|
| 1994 | 627 |
1.8%
|
|
| 1995 | 732 |
2.1%
|
|
| 1996 | 727 |
2.1%
|
|
| 1997 | 1009 |
2.9%
|
|
| 1998 | 882 |
2.5%
|
|
| 1999 | 1101 |
3.2%
|
|
| 2000 | 1277 |
3.7%
|
|
| 2001 | 1025 |
3%
|
|
| 2002 | 1267 |
3.7%
|
|
| 2003 | 1251 |
3.6%
|
|
| 2004 | 1363 |
3.9%
|
|
| 2005 | 1357 |
3.9%
|
|
| 2006 | 1357 |
3.9%
|
|
| 2007 | 1538 |
4.4%
|
|
| 2008 | 1500 |
4.3%
|
|
| 2009 | 1521 |
4.4%
|
|
| 2010 | 1571 |
4.5%
|
|
| 2011 | 1621 |
4.7%
|
|
| 2012 | 1757 |
5.1%
|
|
| 2013 | 1665 |
4.8%
|
|
| 2014 | 1761 |
5.1%
|
|
| 2015 | 1688 |
4.9%
|
|
| 2016 | 1690 |
4.9%
|
|
| 2017 | 1667 |
4.8%
|
|
| 9999 | NO RESPONSE | 1 |
0%
|