| Value | Category | Cases | |
|---|---|---|---|
| 1953 | 1 |
0.2%
|
|
| 1967 | 1 |
0.2%
|
|
| 1972 | 1 |
0.2%
|
|
| 1974 | 1 |
0.2%
|
|
| 1975 | 2 |
0.3%
|
|
| 1977 | 3 |
0.5%
|
|
| 1980 | 1 |
0.2%
|
|
| 1982 | 2 |
0.3%
|
|
| 1985 | 1 |
0.2%
|
|
| 1987 | 5 |
0.8%
|
|
| 1988 | 1 |
0.2%
|
|
| 1989 | 3 |
0.5%
|
|
| 1990 | 5 |
0.8%
|
|
| 1991 | 2 |
0.3%
|
|
| 1992 | 3 |
0.5%
|
|
| 1993 | 6 |
1%
|
|
| 1994 | 3 |
0.5%
|
|
| 1995 | 4 |
0.6%
|
|
| 1996 | 6 |
1%
|
|
| 1997 | 15 |
2.4%
|
|
| 1998 | 5 |
0.8%
|
|
| 1999 | 8 |
1.3%
|
|
| 2000 | 17 |
2.7%
|
|
| 2001 | 1 |
0.2%
|
|
| 2002 | 9 |
1.4%
|
|
| 2003 | 9 |
1.4%
|
|
| 2004 | 10 |
1.6%
|
|
| 2005 | 12 |
1.9%
|
|
| 2006 | 7 |
1.1%
|
|
| 2007 | 18 |
2.9%
|
|
| 2008 | 9 |
1.4%
|
|
| 2009 | 18 |
2.9%
|
|
| 2010 | 30 |
4.8%
|
|
| 2011 | 19 |
3%
|
|
| 2012 | 35 |
5.6%
|
|
| 2013 | 35 |
5.6%
|
|
| 2014 | 58 |
9.3%
|
|
| 2015 | 96 |
15.4%
|
|
| 2016 | 69 |
11.1%
|
|
| 2017 | 93 |
14.9%
|
|
| Sysmiss | 19 |