1850      284.73
  1851      284.88
  1852      285.00
  1853      285.13
  1854      285.27
  1855      285.43
  1856      285.57
  1857      285.73
  1858      285.90
  1859      286.08
  1860      286.23
  1861      286.38
  1862      286.50
  1863      286.62
  1864      286.77
  1865      286.90
  1866      287.00
  1867      287.10
  1868      287.23
  1869      287.37
  1870      287.52
  1871      287.70
  1872      287.90
  1873      288.13
  1874      288.40
  1875      288.70
  1876      289.02
  1877      289.40
  1878      289.80
  1879      290.23
  1880      290.70
  1881      291.20
  1882      291.68
  1883      292.13
  1884      292.57
  1885      292.98
  1886      293.30
  1887      293.57
  1888      293.80
  1889      294.00
  1890      294.18
  1891      294.33
  1892      294.48
  1893      294.60
  1894      294.70
  1895      294.80
  1896      294.90
  1897      295.02
  1898      295.23
  1899      295.50
  1900      295.80
  1901      296.13
  1902      296.48
  1903      296.82
  1904      297.20
  1905      297.62
  1906      298.07
  1907      298.50
  1908      298.90
  1909      299.30
  1910      299.70
  1911      300.07
  1912      300.42
  1913      300.77
  1914      301.10
  1915      301.40
  1916      301.73
  1917      302.08
  1918      302.40
  1919      302.70
  1920      303.02
  1921      303.40
  1922      303.77
  1923      304.12
  1924      304.52
  1925      304.98
  1926      305.40
  1927      305.82
  1928      306.30
  1929      306.77
  1930      307.23
  1931      307.70
  1932      308.17
  1933      308.60
  1934      309.00
  1935      309.40
  1936      309.75
  1937      310.00
  1938      310.17
  1939      310.30
  1940      310.37
  1941      310.37
  1942      310.30
  1943      310.20
  1944      310.13
  1945      310.10
  1946      310.13
  1947      310.20
  1948      310.32
  1949      310.50
  1950      310.75
  1951      311.10
  1952      311.50
  1953      311.93
  1954      312.43
  1955      313.00
  1956      313.60
  1957      314.23
  1958      314.85
  1959      315.50
  1960      316.27
  1961      317.07
  1962      317.80
  1963      318.40
  1964      318.93
  1965      319.65
  1966      320.65
  1967      321.61
  1968      322.63
  1969      323.90
  1970      324.99
  1971      325.86
  1972      327.14
  1973      328.68
  1974      329.74
  1975      330.58
  1976      331.75
  1977      333.27
  1978      334.85
  1979      336.52
  1980      338.36
  1981      339.73
  1982      340.79
  1983      342.20
  1984      343.78
  1985      345.28
  1986      346.80
  1987      348.64
  1988      350.74
  1989      352.49
  1990      353.86
  1991      355.02
  1992      355.89
  1993      356.78
  1994      358.13
  1995      359.84
  1996      361.46
  1997      363.15
  1998      365.32
  1999      367.35
  2000      368.87
  2001      370.47
  2002      372.52
  2003      374.76
  2004      376.81
  2005      378.81