| Value | Category | Cases | |
|---|---|---|---|
| 1950 | 1 |
0%
|
|
| 1955 | 1 |
0%
|
|
| 1956 | 2 |
0%
|
|
| 1957 | 3 |
0%
|
|
| 1958 | 7 |
0.1%
|
|
| 1959 | 2 |
0%
|
|
| 1960 | 6 |
0%
|
|
| 1961 | 3 |
0%
|
|
| 1962 | 4 |
0%
|
|
| 1963 | 5 |
0%
|
|
| 1964 | 3 |
0%
|
|
| 1965 | 7 |
0.1%
|
|
| 1966 | 3 |
0%
|
|
| 1967 | 1 |
0%
|
|
| 1968 | 6 |
0%
|
|
| 1969 | 8 |
0.1%
|
|
| 1970 | 16 |
0.1%
|
|
| 1971 | 5 |
0%
|
|
| 1972 | 5 |
0%
|
|
| 1973 | 4 |
0%
|
|
| 1974 | 7 |
0.1%
|
|
| 1975 | 3 |
0%
|
|
| 1976 | 11 |
0.1%
|
|
| 1977 | 9 |
0.1%
|
|
| 1978 | 19 |
0.2%
|
|
| 1979 | 16 |
0.1%
|
|
| 1980 | 31 |
0.2%
|
|
| 1981 | 17 |
0.1%
|
|
| 1982 | 25 |
0.2%
|
|
| 1983 | 21 |
0.2%
|
|
| 1984 | 36 |
0.3%
|
|
| 1985 | 62 |
0.5%
|
|
| 1986 | 43 |
0.3%
|
|
| 1987 | 78 |
0.6%
|
|
| 1988 | 68 |
0.5%
|
|
| 1989 | 91 |
0.7%
|
|
| 1990 | 199 |
1.6%
|
|
| 1991 | 197 |
1.6%
|
|
| 1992 | 173 |
1.4%
|
|
| 1993 | 128 |
1%
|
|
| 1994 | 157 |
1.3%
|
|
| 1995 | 292 |
2.3%
|
|
| 1996 | 273 |
2.2%
|
|
| 1997 | 238 |
1.9%
|
|
| 1998 | 228 |
1.8%
|
|
| 1999 | 289 |
2.3%
|
|
| 2000 | 502 |
4%
|
|
| 2001 | 322 |
2.6%
|
|
| 2002 | 413 |
3.3%
|
|
| 2003 | 311 |
2.5%
|
|
| 2004 | 325 |
2.6%
|
|
| 2005 | 483 |
3.9%
|
|
| 2006 | 494 |
4%
|
|
| 2007 | 625 |
5%
|
|
| 2008 | 526 |
4.2%
|
|
| 2009 | 365 |
2.9%
|
|
| 2010 | 556 |
4.5%
|
|
| 2011 | 377 |
3%
|
|
| 2012 | 534 |
4.3%
|
|
| 2013 | 461 |
3.7%
|
|
| 2014 | 575 |
4.6%
|
|
| 2015 | 500 |
4%
|
|
| 2016 | 588 |
4.7%
|
|
| 2017 | 1448 |
11.7%
|
|
| 2018 | 218 |
1.8%
|