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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 14.00" | 13.01" | 12.69" | 8.26" | 13.24" | 8.51" | 9.64" | 16.99" | 7.14" | 9.68" | 11.01" | 9.82" | 14.42" | 12.89" | 11.45" | 6.01" | 12.77" | 9.96" | 14.45" | 11.59" | 12.20" | 7.84" | 5.97" | 16.89" | 15.88" | 15.90" | 9.40" | 11.95" | 19.23" | 7.37" | 10.76" | 15.49" | 10.40" | 16.21" | 11.30" | 14.72" | 18.65" | 12.46" | 10.35" | 12.23" | 9.25" | 10.49" | 16.47" | 9.77" | 7.70" | 13.53" | 17.46" | 10.97" | 13.74" | 18.28" | 9.55" | 13.03" | 13.43" | 13.66" | 10.00" | 6.99" | 11.13" | 9.69" | 9.86" | 10.83" | 6.65" | 12.99" | 13.05" | 6.91" | 16.21" | 13.84" | 11.42" | 9.23" | 8.46" | 11.50" | 8.13" | 4.91" | 12.76" | 15.78" | 10.72" | 9.25" | 11.90" | 22.42" | 13.84" | 17.98" | 8.50" | 9.98" | 9.30" | 11.88" | 11.38" | 9.04" | 15.90" | 14.32" | 16.72" | 23.70" | 13.55" | 19.84" | 15.94" | 13.67" | 15.04" | 10.33" | 16.69" | 18.26" | 11.45" | 16.07" | 6.57" | 14.50" | 20.27" | 19.45" | 12.86" | 20.13" | 12.30" | 12.91" | 12.93" | 18.48" | 7.38" | 17.05" | 14.24" | 9.12" | 15.29" | 6.98" | 17.98" | 8.95" |
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