Year Dollars 1890 0.290000 1891 0.293000 1892 0.293000 1893 0.296000 1894 0.297000 1895 0.297000 1896 0.296000 1897 0.298000 1898 0.300000 1899 0.310000 1900 0.321000 1901 0.329000 1902 0.337000 1903 0.343000 1904 0.353000 1905 0.360000 1906 0.374000 1907 0.385000 1908 0.390000 1909 0.395000 1910 0.407000 1911 0.420000 1912 0.429000 1913 0.440000 1914 0.451000 1915 0.448000 1916 0.453000 1917 0.465000 1918 0.511000 1919 0.629000 1920 0.831000 1921 0.934000 1922 0.932000 1923 0.972000 1924 1.00900 1925 1.01400 1926 1.03700 1927 1.05600 1928 1.05600