1870.5 -74.37 22.06 1871.5 -77.38 22.35 1872.5 -68.97 21.88 1873.5 -72.71 22.22 1874.5 -74.35 22.13 1875.5 -77.99 22.16 1876.5 -65.55 22.46 1877.5 -55.41 21.83 1878.5 -53.95 23.24 1879.5 -66.04 23.38 1880.5 -65.19 22.22 1881.5 -61.46 21.66 1882.5 -74.04 19.96 1883.5 -72.71 19.69 1884.5 -61.78 19.80 1885.5 -64.23 18.90 1886.5 -58.45 18.17 1887.5 -61.76 18.14 1888.5 -65.03 18.06 1889.5 -59.21 18.15 1890.5 -59.46 18.44 1891.5 -58.91 18.47 1892.5 -55.32 19.52 1893.5 -49.85 18.69 1894.5 -57.33 19.11 1895.5 -45.51 18.98 1896.5 -51.12 18.48 1897.5 -47.34 19.07 1898.5 -42.79 17.68 1899.5 -38.30 16.96 1900.5 -46.80 15.94 1901.5 -50.47 15.55 1902.5 -48.33 15.29 1903.5 -41.06 15.11 1904.5 -43.76 14.63 1905.5 -47.85 13.74 1906.5 -41.59 12.89 1907.5 -43.96 13.42 1908.5 -46.57 12.59 1909.5 -42.38 13.22 1910.5 -44.66 12.52 1911.5 -36.54 13.35 1912.5 -39.73 12.03 1913.5 -38.48 12.71 1914.5 -30.29 13.47 1915.5 -23.86 16.21 1916.5 -32.59 11.32 1917.5 -36.92 11.43 1918.5 -33.93 11.34 1919.5 -31.86 10.82 1920.5 -32.41 11.55 1921.5 -34.05 12.46 1922.5 -35.17 11.91 1923.5 -32.07 12.17 1924.5 -39.55 11.55 1925.5 -41.02 10.74 1926.5 -35.53 12.38 1927.5 -33.05 10.82 1928.5 -33.92 11.55 1929.5 -36.81 10.90 1930.5 -29.19 12.02 1931.5 -29.23 10.63 1932.5 -24.31 10.68 1933.5 -22.54 10.64 1934.5 -28.68 10.92 1935.5 -20.34 11.08 1936.5 -20.57 10.77 1937.5 -17.32 10.23 1938.5 -12.16 10.44 1939.5 -11.78 11.11 1940.5 -16.47 11.00 1941.5 -1.52 9.45 1942.5 -0.38 10.38 1943.5 -2.80 10.34 1944.5 -4.69 10.97 1945.5 -2.05 9.20 1946.5 3.68 10.52 1947.5 3.97 11.14 1948.5 10.04 8.73 1949.5 9.62 8.42 1950.5 14.52 8.29 1951.5 25.14 8.72 1952.5 22.13 8.49 1953.5 24.62 7.38 1954.5 22.97 8.13 1955.5 26.13 7.79 1956.5 20.95 7.58 1957.5 35.48 7.53 1958.5 38.65 6.36 1959.5 37.32 6.38 1960.5 38.74 6.51 1961.5 43.00 7.61 1962.5 39.31 6.45 1963.5 39.60 6.63 1964.5 33.94 9.09 1965.5 45.16 6.66 1966.5 38.67 6.75 1967.5 38.08 6.92 1968.5 39.26 9.29 1969.5 48.59 6.32 1970.5 46.44 7.26 1971.5 54.40 6.17 1972.5 58.90 6.80 1973.5 58.51 7.40 1974.5 66.66 7.07 1975.5 65.54 5.96 1976.5 62.91 5.94 1977.5 58.60 6.62 1978.5 63.95 7.05 1979.5 63.26 7.64 1980.5 68.48 6.27 1981.5 79.17 6.22 1982.5 72.79 6.23 1983.5 78.31 6.66 1984.5 77.65 6.55 1985.5 67.99 5.54 1986.5 67.13 5.74 1987.5 72.71 6.19 1988.5 73.96 5.86 1989.5 74.89 6.15 1990.5 81.24 6.81 1991.5 91.17 5.87 1992.5 93.75 5.99 1993.5 88.42 7.13 1994.5 91.62 5.71 1995.5 98.27 6.10 1996.5 102.40 6.74 1997.5 111.84 6.78 1998.5 105.35 7.48 1999.5 110.13 6.92 2000.5 113.70 7.90 2001.5 116.04 9.42