| Value | Category | Cases | |
|---|---|---|---|
| 1976 | 1 |
0.3%
|
|
| 1977 | 1 |
0.3%
|
|
| 1981 | 1 |
0.3%
|
|
| 1985 | 3 |
0.9%
|
|
| 1990 | 1 |
0.3%
|
|
| 1992 | 2 |
0.6%
|
|
| 1995 | 4 |
1.2%
|
|
| 1996 | 3 |
0.9%
|
|
| 1997 | 9 |
2.7%
|
|
| 1998 | 5 |
1.5%
|
|
| 1999 | 6 |
1.8%
|
|
| 2000 | 3 |
0.9%
|
|
| 2001 | 4 |
1.2%
|
|
| 2002 | 2 |
0.6%
|
|
| 2003 | 7 |
2.1%
|
|
| 2004 | 7 |
2.1%
|
|
| 2005 | 7 |
2.1%
|
|
| 2006 | 13 |
4%
|
|
| 2007 | 2 |
0.6%
|
|
| 2008 | 10 |
3%
|
|
| 2009 | 11 |
3.3%
|
|
| 2010 | 30 |
9.1%
|
|
| 2011 | 21 |
6.4%
|
|
| 2012 | 26 |
7.9%
|
|
| 2013 | 39 |
11.9%
|
|
| 2014 | 88 |
26.7%
|
|
| 2015 | 23 |
7%
|
|
| Sysmiss | 16322 |