1888 1.00100 1889 0.922000 1890 0.941000 1891 0.895000 1892 0.898000 1893 0.878000 1894 0.860000 1895 0.839000 1896 0.806000 1897 0.798000 1898 0.753000 1899 0.724000 1900 0.729000 1901 0.750000 1902 0.757000 1903 0.763000 1904 0.780000 1905 0.766000 1906 0.748000 1907 0.759000 1908 0.754000 1909 0.763000 1910 0.753000 1911 0.757000 1912 0.744000 1913 0.729000 1914 0.737000 1915 0.735000 1916 0.719000 1917 0.728000 1918 0.862000 1919 0.987000 1920 1.06900 1921 1.29400 1922 1.19400 1923 1.13200 1924 1.13200 1925 1.11400 1926 1.09600 1927 1.09500 1928 1.09400 1929 1.08800 1930 1.07400 1931 1.06200 1932 1.05600 1933 1.00900 1934 0.989000 1935 0.998000