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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 20.25" | 21.95" | 21.08" | 18.14" | 25.58" | 18.45" | 18.51" | 26.92" | 16.32" | 25.64" | 21.23" | 22.90" | 28.04" | 17.99" | 19.59" | 17.74" | 23.67" | 20.49" | 25.22" | 24.73" | 19.40" | 16.41" | 14.08" | 29.02" | 26.64" | 22.44" | 24.17" | 25.10" | 26.14" | 13.46" | 24.23" | 25.58" | 19.76" | 25.86" | 22.92" | 23.27" | 26.21" | 22.40" | 18.45" | 25.01" | 18.49" | 19.60" | 25.23" | 19.39" | 18.67" | 26.92" | 24.04" | 19.59" | 25.83" | 26.33" | 25.26" | 25.90" | 21.83" | 25.98" | 23.82" | 16.38" | 19.99" | 21.72" | 19.04" | 20.47" | 15.28" | 27.51" | 26.17" | 17.91" | 21.70" | 24.63" | 19.93" | 15.08" | 19.17" | 20.25" | 20.56" | 15.97" | 24.31" | 24.03" | 21.92" | 16.41" | 20.97" | 29.87" | 24.36" | 26.80" | 19.32" | 21.97" | 19.65" | 26.63" | 23.22" | 18.93" | 23.14" | 28.35" | 22.33" | 27.68" | 21.43" | 28.63" | 19.88" | 22.03" | 25.73" | 27.51" | 27.26" | 25.90" | 22.41" | 27.73" | 15.01" | 27.04" | 23.91" | 26.43" | 17.57" | 27.21" | 22.26" | 23.32" | 23.03" | 25.59" | 15.97" | 26.89" | 21.29" | 20.53" | 26.39" | 14.62" | 23.15" |
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