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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 13.92" | 19.14" | 11.14" | 9.59" | 16.51" | 19.60" | 14.63" | 15.60" | 15.52" | 20.63" | 18.67" | 26.67" | 20.25" | 23.44" | 18.35" | 18.95" | 12.33" | 17.95" | 27.59" | 19.56" | 25.77" | 16.13" | 11.00" | 18.28" | 10.65" | 22.84" | 18.83" | 16.89" | 10.71" | 13.67" | 16.87" | 20.03" | 14.03" | 12.61" | 13.48" | 13.27" | 17.24" | 11.39" | 12.08" | 13.94" | 18.55" | 15.45" | 19.76" | 16.72" | 18.82" | 20.98" | 21.94" | 18.09" | 16.01" | 15.04" | 17.95" | 13.48" | 10.75" | 15.33" | 13.50" | 17.62" | 19.60" | 16.32" | 14.18" | 13.88" | 19.94" | 11.03" | 20.63" | 17.19" | 10.78" | 11.94" | 16.43" | 13.76" | 16.37" | 16.80" | 17.68" | 14.47" | 17.87" | 23.48" | 14.67" | 15.28" | 14.23" | 17.99" | 17.18" | 14.84" | 14.10" | 9.89" | 20.46" | 19.09" | 20.90" | 12.67" | 19.69" | 27.26" | 24.93" | 14.93" | 18.71" | 12.59" | 14.46" | 11.68" | 13.52" | 9.12" | 17.90" | 21.81" | 12.91" | 18.31" | 23.30" | 20.88" | 21.63" | 20.09" | 15.36" | 12.84" | 13.12" | 13.42" | 17.69" | 18.16" | 19.94" | 15.42" | 13.69" | 10.34" | 15.52" | 18.80" | 13.10" | 14.47" |
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