Year	Number
1907	-10
1908	-10
1909	-10
1910	-10
1911	-10
1912	-10
1913	-10
1914	-10
1915	-10
1916	-10
1917	-10
1918	-10
1919	-10
1920	-10
1921	-10
1922	-10
1923	-10
1924	-10
1925	-10
1926	-10
1927	-10
1928	-10
1929	-10
1930	-10
1931	-10
1932	-10
1933	-10
1934	-10
1935	-10
1936	-10
1937	-10
1938	-10
1939	-10
1940	-10
1941	-10
1942	-10
1943	-10
1944	-10
1945	-10
1946	-10
1947	-10
1948	-10
1949	-10
1950	-10
1951	-10
1952	-10
1953	-10
1954	-10
1955	-10
1956	-10
1957	-10
1958	-10
1959	-10
1960	-10
1961	-10
1962	-10
1963	-10
1964	-10
1965	-10
1966	-10
1967	-10
1968	-10
1969	-10
1970	-10
1971	-10
1972	-10
1973	-10
1974	-10
1975	-10
1976	-10
1977	-10
1978	-10
1979	-10
1980	-10
1981	-10
1982	-10
1983	-10
1984	-10
1985	-10
1986	-10
1987	-10
1988	-10
1989	-10
1990	-10
1991	-10
1992	-10
1993	-10
1994	-10
1995	-10
1996	-10
1997	-10
1998	-10
1999	-10
2000	-10
2001	-10
2002	-10
2003	-10
2004	-10
2005	-6
2006	-6
2007	-6
2008	3
2009	3
2010	3
2011	3