| Value | Category | Cases | |
|---|---|---|---|
| 1953 | 1 |
0.1%
|
|
| 1956 | 1 |
0.1%
|
|
| 1963 | 1 |
0.1%
|
|
| 1968 | 1 |
0.1%
|
|
| 1972 | 1 |
0.1%
|
|
| 1973 | 1 |
0.1%
|
|
| 1975 | 2 |
0.3%
|
|
| 1976 | 1 |
0.1%
|
|
| 1978 | 2 |
0.3%
|
|
| 1979 | 3 |
0.4%
|
|
| 1980 | 7 |
0.9%
|
|
| 1981 | 1 |
0.1%
|
|
| 1982 | 4 |
0.5%
|
|
| 1983 | 1 |
0.1%
|
|
| 1984 | 2 |
0.3%
|
|
| 1985 | 3 |
0.4%
|
|
| 1987 | 1 |
0.1%
|
|
| 1988 | 2 |
0.3%
|
|
| 1989 | 2 |
0.3%
|
|
| 1990 | 3 |
0.4%
|
|
| 1991 | 7 |
0.9%
|
|
| 1992 | 5 |
0.6%
|
|
| 1993 | 6 |
0.8%
|
|
| 1994 | 6 |
0.8%
|
|
| 1995 | 6 |
0.8%
|
|
| 1996 | 6 |
0.8%
|
|
| 1997 | 12 |
1.5%
|
|
| 1998 | 7 |
0.9%
|
|
| 1999 | 9 |
1.1%
|
|
| 2000 | 32 |
4.1%
|
|
| 2001 | 10 |
1.3%
|
|
| 2002 | 17 |
2.2%
|
|
| 2003 | 25 |
3.2%
|
|
| 2004 | 13 |
1.6%
|
|
| 2005 | 21 |
2.7%
|
|
| 2006 | 24 |
3%
|
|
| 2007 | 25 |
3.2%
|
|
| 2008 | 34 |
4.3%
|
|
| 2009 | 41 |
5.2%
|
|
| 2010 | 63 |
8%
|
|
| 2011 | 66 |
8.4%
|
|
| 2012 | 147 |
18.7%
|
|
| 2013 | 166 |
21.1%
|
|
| Sysmiss | 1316 |