Choose from the options below and click "Plot" to create a time series graph.
Data are available from January 1895 through April 2013.
Move mouse towards an axis until highlighted. Left-click mouse to pan. Shift key + left-click to zoom.
| 1896 | 1897 | 1898 | 1899 | 1900 | 1901 | 1902 | 1903 | 1904 | 1905 | 1906 | 1907 | 1908 | 1909 | 1910 | 1911 | 1912 | 1913 | 1914 | 1915 | 1916 | 1917 | 1918 | 1919 | 1920 | 1921 | 1922 | 1923 | 1924 | 1925 | 1926 | 1927 | 1928 | 1929 | 1930 | 1931 | 1932 | 1933 | 1934 | 1935 | 1936 | 1937 | 1938 | 1939 | 1940 | 1941 | 1942 | 1943 | 1944 | 1945 | 1946 | 1947 | 1948 | 1949 | 1950 | 1951 | 1952 | 1953 | 1954 | 1955 | 1956 | 1957 | 1958 | 1959 | 1960 | 1961 | 1962 | 1963 | 1964 | 1965 | 1966 | 1967 | 1968 | 1969 | 1970 | 1971 | 1972 | 1973 | 1974 | 1975 | 1976 | 1977 | 1978 | 1979 | 1980 | 1981 | 1982 | 1983 | 1984 | 1985 | 1986 | 1987 | 1988 | 1989 | 1990 | 1991 | 1992 | 1993 | 1994 | 1995 | 1996 | 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 16.41" | 18.99" | 15.21" | 15.35" | 15.75" | 19.52" | 11.53" | 23.74" | 11.75" | 15.96" | 17.41" | 16.03" | 22.49" | 14.13" | 14.69" | 10.45" | 12.45" | 15.82" | 29.43" | 25.44" | 16.48" | 11.05" | 5.69" | 21.53" | 28.71" | 20.71" | 13.74" | 14.15" | 25.19" | 10.96" | 24.57" | 14.88" | 12.27" | 16.98" | 14.68" | 24.31" | 15.68" | 15.83" | 15.92" | 15.09" | 18.28" | 15.87" | 16.95" | 11.07" | 9.08" | 21.12" | 14.09" | 18.22" | 16.88" | 18.70" | 17.50" | 24.20" | 13.40" | 12.89" | 16.58" | 6.49" | 13.45" | 14.91" | 18.14" | 8.86" | 11.17" | 8.82" | 25.01" | 19.52" | 19.08" | 28.85" | 14.41" | 14.15" | 12.50" | 16.55" | 19.80" | 10.74" | 30.81" | 16.33" | 18.43" | 13.13" | 28.57" | 16.81" | 25.01" | 23.35" | 13.89" | 24.98" | 12.40" | 22.57" | 14.62" | 17.95" | 18.73" | 14.28" | 17.61" | 19.39" | 18.42" | 23.77" | 11.55" | 11.91" | 9.46" | 15.39" | 26.71" | 15.33" | 9.99" | 24.25" | 13.39" | 18.35" | 20.88" | 33.64" | 8.99" | 19.87" | 24.70" | 28.60" | 17.40" | 21.08" | 8.70" | 19.72" | 13.03" | 8.19" | 26.03" | 15.67" | 12.17" | 11.90" |
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