| Value | Category | Cases | |
|---|---|---|---|
| 1965 | 1 |
0.3%
|
|
| 1967 | 1 |
0.3%
|
|
| 1970 | 2 |
0.6%
|
|
| 1975 | 1 |
0.3%
|
|
| 1979 | 1 |
0.3%
|
|
| 1980 | 2 |
0.6%
|
|
| 1987 | 1 |
0.3%
|
|
| 1988 | 2 |
0.6%
|
|
| 1990 | 3 |
0.8%
|
|
| 1992 | 1 |
0.3%
|
|
| 1995 | 4 |
1.1%
|
|
| 1996 | 1 |
0.3%
|
|
| 1997 | 1 |
0.3%
|
|
| 1998 | 1 |
0.3%
|
|
| 1999 | 2 |
0.6%
|
|
| 2000 | 4 |
1.1%
|
|
| 2001 | 1 |
0.3%
|
|
| 2002 | 2 |
0.6%
|
|
| 2003 | 5 |
1.4%
|
|
| 2004 | 1 |
0.3%
|
|
| 2006 | 3 |
0.8%
|
|
| 2007 | 17 |
4.8%
|
|
| 2008 | 1 |
0.3%
|
|
| 2009 | 6 |
1.7%
|
|
| 2010 | 7 |
2%
|
|
| 2011 | 3 |
0.8%
|
|
| 2012 | 10 |
2.8%
|
|
| 2013 | 8 |
2.2%
|
|
| 2014 | 12 |
3.4%
|
|
| 2015 | 17 |
4.8%
|
|
| 2016 | 29 |
8.1%
|
|
| 2017 | 202 |
56.7%
|
|
| 9998 | 4 |
1.1%
|
|
| Sysmiss | 19 |