| Value | Category | Cases | |
|---|---|---|---|
| 1951 | 1 |
0.1%
|
|
| 1953 | 1 |
0.1%
|
|
| 1956 | 1 |
0.1%
|
|
| 1963 | 1 |
0.1%
|
|
| 1965 | 1 |
0.1%
|
|
| 1968 | 1 |
0.1%
|
|
| 1969 | 1 |
0.1%
|
|
| 1970 | 1 |
0.1%
|
|
| 1972 | 3 |
0.2%
|
|
| 1973 | 1 |
0.1%
|
|
| 1974 | 2 |
0.1%
|
|
| 1975 | 3 |
0.2%
|
|
| 1976 | 1 |
0.1%
|
|
| 1977 | 1 |
0.1%
|
|
| 1978 | 4 |
0.3%
|
|
| 1979 | 3 |
0.2%
|
|
| 1980 | 10 |
0.7%
|
|
| 1981 | 5 |
0.3%
|
|
| 1982 | 6 |
0.4%
|
|
| 1983 | 2 |
0.1%
|
|
| 1984 | 4 |
0.3%
|
|
| 1985 | 4 |
0.3%
|
|
| 1986 | 5 |
0.3%
|
|
| 1987 | 7 |
0.5%
|
|
| 1988 | 2 |
0.1%
|
|
| 1989 | 3 |
0.2%
|
|
| 1990 | 7 |
0.5%
|
|
| 1991 | 9 |
0.6%
|
|
| 1992 | 7 |
0.5%
|
|
| 1993 | 11 |
0.8%
|
|
| 1994 | 10 |
0.7%
|
|
| 1995 | 10 |
0.7%
|
|
| 1996 | 12 |
0.8%
|
|
| 1997 | 19 |
1.3%
|
|
| 1998 | 16 |
1.1%
|
|
| 1999 | 18 |
1.2%
|
|
| 2000 | 54 |
3.7%
|
|
| 2001 | 35 |
2.4%
|
|
| 2002 | 26 |
1.8%
|
|
| 2003 | 39 |
2.7%
|
|
| 2004 | 37 |
2.5%
|
|
| 2005 | 39 |
2.7%
|
|
| 2006 | 41 |
2.8%
|
|
| 2007 | 59 |
4%
|
|
| 2008 | 58 |
4%
|
|
| 2009 | 76 |
5.2%
|
|
| 2010 | 123 |
8.4%
|
|
| 2011 | 128 |
8.7%
|
|
| 2012 | 283 |
19.3%
|
|
| 2013 | 273 |
18.6%
|
|
| Sysmiss | 2748 |