Year	Measure
1800	5
1850	5
1859	4
1860	3
1861	3
1862	3
1863	3
1864	3
1865	3
1866	3
1867	3
1868	3
1869	3
1870	3
1871	3
1872	3
1873	3
1874	3
1875	3
1876	3
1877	3
1878	3
1879	3
1880	3
1881	3
1882	3
1883	3
1884	3
1885	3
1886	3
1887	3
1888	3
1889	3
1890	3
1891	3
1892	3
1893	3
1894	3
1895	3
1896	3
1897	3
1898	3
1899	3
1900	3
1901	3
1902	3
1903	3
1904	3
1905	3
1906	3
1907	3
1908	3
1909	3
1910	3
1911	3
1912	3
1913	3
1914	3
1915	3
1919	3
1920	3
1921	3
1922	3
1923	3
1924	3
1925	3
1926	3
1927	3
1928	3
1929	3
1930	3
1931	3
1932	3
1933	3
1934	3
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	2
1951	2
1952	2
1953	2
1954	2
1955	2
1956	2
1957	2
1958	2
1959	2
1960	2
1961	2
1962	2
1963	2
1964	2
1965	2
1966	2
1967	2
1968	2
1969	2
1970	2
1971	2
1972	2
1973	2
1974	2
1975	2
1976	2
1977	2
1978	2
1979	2
1980	2
1981	2
1982	2
1983	2
1984	2
1985	2
1986	2
1987	2
1988	2
1989	2
1990	2
1991	2
1992	2
1993	2
1994	2
1995	2
1996	2
1997	2
1998	2
1999	2
2000	2
2001	2
2002	2
2003	2
2004	2
2005	2
2006	2
2007	2
2008	2
2009	2