Year	Number
1821	-3
1822	-5
1823	-5
1824	-3
1825	-1
1826	1
1827	3
1828	5
1829	5
1830	5
1831	5
1832	5
1833	5
1834	5
1835	-3
1836	-3
1837	-3
1838	-3
1839	-1
1840	-1
1841	-1
1842	-1
1843	-1
1844	-1
1845	-1
1846	-1
1847	-1
1848	-1
1849	-1
1850	-1
1851	-1
1852	-1
1853	-1
1854	-1
1855	-1
1856	-1
1857	-1
1858	-1
1859	-1
1860	-1
1861	-1
1862	-1
1863	-1
1864	-1
1865	-1
1866	-1
1867	-1
1868	-1
1869	-1
1870	-1
1871	-1
1872	-1
1873	-1
1874	-1
1875	-1
1876	-1
1877	-1
1878	-1
1879	-3
1880	-3
1881	-3
1882	-3
1883	-3
1884	-3
1885	-3
1886	2
1887	2
1888	2
1889	2
1890	2
1891	2
1892	2
1893	2
1894	2
1895	2
1896	2
1897	2
1898	2
1899	2
1900	2
1901	2
1902	2
1903	2
1904	2
1905	2
1906	2
1907	2
1908	2
1909	2
1910	2
1911	2
1912	2
1913	2
1914	2
1915	2
1916	2
1917	2
1918	2
1919	-4
1920	-9
1921	-9
1922	-9
1923	-9
1924	-9
1925	-9
1926	-9
1927	-9
1928	-9
1929	-9
1930	-6
1931	-3
1932	0
1933	2
1934	2
1935	2
1936	2
1937	2
1938	2
1939	2
1940	2
1941	2
1942	2
1943	2
1944	2
1945	2
1946	2
1947	2
1948	-6
1949	-6
1950	-2
1951	-2
1952	-2
1953	-2
1954	-2
1955	-2
1956	5
1957	5
1958	5
1959	5
1960	5
1961	5
1962	-6
1963	5
1964	5
1965	5
1966	5
1967	5
1968	-7
1969	-7
1970	-7
1971	-7
1972	-7
1973	-7
1974	-7
1975	-7
1976	-7
1977	-7
1978	-2
1979	3
1980	7
1981	7
1982	7
1983	7
1984	7
1985	7
1986	7
1987	7
1988	7
1989	7
1990	8
1991	8
1992	-3
1993	1
1994	1
1995	1
1996	1
1997	1
1998	1
1999	1
2000	5
2001	9
2002	9
2003	9
2004	9
2005	9
2006	9
2007	9
2008	9
2009	9
2010	9
2011	9