Year	Number
1944	3
1945	3
1946	1
1947	2
1948	4
1949	3
1950	8
1951	5
1952	3
1953	4
1954	2
1955	6
1956	2
1957	2
1958	5
1959	2
1960	2
1961	7
1962	1
1963	2
1964	6
1965	1
1966	3
1967	1
1968	0
1969	5
1970	2
1971	1
1972	0
1973	1
1974	2
1975	3
1976	2
1977	1
1978	2
1979	2
1980	2
1981	3
1982	1
1983	1
1984	1
1985	3
1986	0
1987	1
1988	3
1989	2
1990	1
1991	2
1992	1
1993	1
1994	0
1995	5
1996	6
1997	1
1998	3
1999	5
2000	3
2001	4
2002	2
2003	3
2004	6
2005	7
2006	2
2007	2
2008	5
2009	2
2010	5
2011	4
2012	2
2013	0