Year	Number
1800	-10
1801	-10
1802	-10
1803	-10
1804	-10
1805	-10
1806	-10
1807	-10
1808	-10
1809	-10
1810	-10
1811	-10
1812	-10
1813	-10
1814	-10
1815	-10
1816	-10
1817	-10
1818	-10
1819	-10
1820	-10
1821	-10
1822	-10
1823	-10
1824	-10
1825	-10
1826	-10
1827	-10
1828	-10
1829	-10
1830	-10
1831	-10
1832	-10
1833	-10
1834	-10
1835	-10
1836	-10
1837	-10
1838	-10
1839	-10
1840	-10
1841	-10
1842	-10
1843	-10
1844	-10
1845	-10
1846	-10
1847	-10
1848	-10
1849	-10
1850	-10
1851	-10
1852	-10
1853	-10
1854	-10
1855	-10
1856	-10
1857	-10
1858	-10
1859	-10
1860	-10
1861	-10
1862	-10
1863	-10
1864	-10
1865	-10
1866	-10
1867	-10
1868	-10
1869	-10
1870	-10
1871	-10
1872	-10
1873	-10
1874	-10
1875	-10
1876	-10
1877	-10
1878	-10
1879	-10
1880	-10
1881	-10
1882	-10
1883	-10
1884	-10
1885	-10
1886	-10
1887	-10
1888	-10
1889	-10
1890	-10
1891	-10
1892	-10
1893	-10
1894	-10
1895	-10
1896	-10
1897	-10
1898	-10
1899	-10
1900	-10
1901	-10
1902	-10
1903	-10
1904	-10
1905	-10
1906	-10
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	-8
1933	-6
1934	-4
1935	-3
1936	-3
1937	-3
1938	-3
1939	-3
1940	-3
1941	-3
1942	-3
1943	-3
1944	-3
1945	-3
1946	-3
1947	-3
1948	-3
1949	-3
1950	-3
1951	-3
1952	-6
1953	-6
1954	-6
1955	-3
1956	-3
1957	-3
1958	-7
1959	-7
1960	-7
1961	-7
1962	-7
1963	-7
1964	-7
1965	-7
1966	-7
1967	-7
1968	-2
1969	2
1970	2
1971	-7
1972	-7
1973	-2
1974	3
1975	3
1976	-7
1977	-2
1978	2
1979	2
1980	2
1981	2
1982	2
1983	2
1984	2
1985	2
1986	2
1987	2
1988	3
1989	3
1990	3
1991	-1
1992	9
1993	9
1994	9
1995	9
1996	9
1997	9
1998	9
1999	9
2000	9
2001	9
2002	9
2003	9
2004	9
2005	9
2006	-5
2007	-1
2008	4
2009	4
2010	4
2011	7