Year	Years
1800	391
1801	391
1802	391
1803	391
1804	391
1805	391
1806	391
1807	391
1808	391
1809	391
1810	391
1811	391
1812	391
1813	391
1814	391
1815	391
1816	391
1817	391
1818	391
1819	391
1820	391
1821	391
1822	391
1823	391
1824	391
1825	391
1826	391
1827	391
1828	391
1829	391
1830	391
1831	391
1832	391
1833	391
1834	391
1835	391
1836	391
1837	391
1838	391
1839	391
1840	391
1841	391
1842	391
1843	391
1844	391
1845	391
1846	391
1847	391
1848	391
1849	391
1850	391
1851	391
1852	391
1853	391
1854	391
1855	391
1856	391
1857	391
1858	391
1859	391
1860	391
1870	169.7
1871	156.7
1872	182.8
1873	175.3
1874	196
1875	222.2
1876	184.7
1877	199.7
1878	207.2
1879	177.2
1880	180.9
1881	179.1
1882	214.7
1883	188.4
1884	196
1885	201.6
1886	197.8
1887	179.1
1888	179.1
1889	209.1
1890	162.2
1891	177.2
1892	160.4
1893	179.1
1894	156.7
1895	151.1
1896	175.3
1897	158.5
1898	201.6
1899	179.1
1900	149.3
1901	156.7
1902	162.2
1903	169.7
1904	117.2
1905	117.2
1906	118.9
1907	115.4
1908	110.3
1909	100.2
1910	105.2
1911	93.6
1912	100.2
1913	100.2
1914	98.52
1915	93.6
1916	96.88
1917	75.01
1918	79.68
1919	95.24
1920	95.24
1921	89.08
1922	70.99
1923	79.48
1924	76.05
1925	69.76
1926	70.23
1927	72.27
1928	71.57
1929	68.14
1930	63.78
1931	54.35
1932	53.64
1933	53.3
1934	58.03
1935	53.59
1936	55.81
1937	50.67
1938	50.45
1939	50.47
1940	50.17
1941	52.49
1942	51.49
1943	50.27
1944	41.42
1945	37.93
1946	38.52
1947	35.78
1948	33.93
1949	31.51
1950	31.6
1951	31
1952	30.3
1953	29.5
1954	28.7
1955	28
1956	27.3
1957	26.6
1958	26
1959	25.4
1960	24.9
1961	24.3
1962	23.7
1963	23.2
1964	22.7
1965	22.4
1966	22.1
1967	22
1968	21.9
1969	21.7
1970	21.4
1971	20.9
1972	20.2
1973	19.4
1974	18.4
1975	17.3
1976	16.2
1977	15.3
1978	14.4
1979	13.6
1980	13
1981	12.5
1982	12.2
1983	11.8
1984	11.6
1985	11.3
1986	11
1987	10.6
1988	10.2
1989	9.7
1990	9.2
1991	8.6
1992	8.1
1993	7.7
1994	7.3
1995	7
1996	6.8
1997	6.6
1998	6.5
1999	6.4
2000	6.2
2001	6.1
2002	6
2003	5.9
2004	5.9
2005	5.7
2006	5.6
2007	5.4
2008	5.2
2009	5
2010	4.8
2011	4.5
2012	4.2
2013	4