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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 13.65" | 13.15" | 6.15" | 9.69" | 11.32" | 14.70" | 11.78" | 13.90" | 16.33" | 12.66" | 18.44" | 22.59" | 10.85" | 20.38" | 15.46" | 19.53" | 10.70" | 10.08" | 23.29" | 16.69" | 21.14" | 12.39" | 11.18" | 12.08" | 11.10" | 15.79" | 15.95" | 13.39" | 6.36" | 12.40" | 11.68" | 17.34" | 11.74" | 10.06" | 11.63" | 8.39" | 13.78" | 9.10" | 8.10" | 14.75" | 13.20" | 14.36" | 20.51" | 8.79" | 15.61" | 20.61" | 14.96" | 16.65" | 11.81" | 13.52" | 11.62" | 9.97" | 9.83" | 10.17" | 11.03" | 12.94" | 19.12" | 12.35" | 12.31" | 10.07" | 17.01" | 8.91" | 18.29" | 8.76" | 10.00" | 9.82" | 12.87" | 12.06" | 8.37" | 15.52" | 11.84" | 17.86" | 10.12" | 19.95" | 11.42" | 13.13" | 9.08" | 15.31" | 16.02" | 12.98" | 6.54" | 4.36" | 21.26" | 12.82" | 16.82" | 9.92" | 18.72" | 23.28" | 13.72" | 10.38" | 17.51" | 8.23" | 10.59" | 11.13" | 7.14" | 9.99" | 11.19" | 18.03" | 8.68" | 21.78" | 14.74" | 15.23" | 20.97" | 12.32" | 12.61" | 9.10" | 10.92" | 14.61" | 12.23" | 16.06" | 18.36" | 8.15" | 9.93" | 10.16" | 13.28" | 15.66" | 8.71" | 8.82" |
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