| Value | Category | Cases | |
|---|---|---|---|
| 1951 | 1 |
0.1%
|
|
| 1960 | 1 |
0.1%
|
|
| 1962 | 1 |
0.1%
|
|
| 1970 | 1 |
0.1%
|
|
| 1973 | 2 |
0.1%
|
|
| 1975 | 1 |
0.1%
|
|
| 1976 | 1 |
0.1%
|
|
| 1977 | 1 |
0.1%
|
|
| 1978 | 2 |
0.1%
|
|
| 1980 | 2 |
0.1%
|
|
| 1981 | 3 |
0.2%
|
|
| 1982 | 3 |
0.2%
|
|
| 1984 | 2 |
0.1%
|
|
| 1986 | 1 |
0.1%
|
|
| 1987 | 1 |
0.1%
|
|
| 1988 | 1 |
0.1%
|
|
| 1989 | 4 |
0.3%
|
|
| 1990 | 11 |
0.7%
|
|
| 1991 | 4 |
0.3%
|
|
| 1993 | 1 |
0.1%
|
|
| 1994 | 5 |
0.3%
|
|
| 1995 | 9 |
0.6%
|
|
| 1996 | 2 |
0.1%
|
|
| 1997 | 5 |
0.3%
|
|
| 1998 | 8 |
0.5%
|
|
| 1999 | 7 |
0.5%
|
|
| 2000 | 27 |
1.8%
|
|
| 2001 | 15 |
1%
|
|
| 2002 | 11 |
0.7%
|
|
| 2003 | 13 |
0.8%
|
|
| 2004 | 18 |
1.2%
|
|
| 2005 | 27 |
1.8%
|
|
| 2006 | 24 |
1.6%
|
|
| 2007 | 23 |
1.5%
|
|
| 2008 | 37 |
2.4%
|
|
| 2009 | 36 |
2.3%
|
|
| 2010 | 36 |
2.3%
|
|
| 2011 | 17 |
1.1%
|
|
| 2012 | 53 |
3.5%
|
|
| 2013 | 50 |
3.3%
|
|
| 2014 | 61 |
4%
|
|
| 2015 | 81 |
5.3%
|
|
| 2016 | 121 |
7.9%
|
|
| 2017 | 148 |
9.7%
|
|
| 2018 | 329 |
21.5%
|
|
| 2019 | 326 |
21.3%
|
|
| Sysmiss | 1 |