Year	Measure
1800	3
1810	3
1825	3
1830	3
1840	3
1850	3
1851	3
1852	3
1853	3
1854	3
1855	3
1856	3
1857	3
1858	3
1859	3
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
1901	1
1902	1
1903	1
1904	1
1905	1
1906	1
1907	1
1908	1
1909	1
1910	1
1911	1
1912	1
1913	1
1914	1
1915	1
1916	1
1917	1
1918	1
1919	1
1920	1
1921	1
1922	1
1923	1
1924	1
1925	1
1926	1
1927	1
1928	1
1929	1
1930	1
1931	1
1932	1
1933	1
1934	1
1935	1
1936	1
1937	1
1938	1
1939	1
1940	1
1941	1
1942	1
1943	1
1944	1
1945	1
1946	1
1947	1
1948	1
1949	1
1950	1
1951	1
1952	1
1953	1
1954	1
1955	1
1956	1
1957	1
1958	1
1959	1
1960	1
1961	1
1962	1
1963	1
1964	1
1965	1
1966	1
1967	1
1968	1
1969	1
1970	1
1971	1
1972	1
1973	1
1974	1
1975	1
1976	1
1977	1
1978	1
1979	1
1980	1
1981	1
1982	1
1983	1
1984	1
1985	1
1986	1
1987	1
1988	1
1989	1
1990	1
1991	1
1992	1
1993	1
1994	1
1995	1
1996	1
1997	1
1998	1
1999	1
2000	1
2001	1
2002	1
2003	1
2004	1
2005	1
2006	1
2007	1
2008	1
2009	2