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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 17.27" | 20.69" | 20.14" | 19.54" | 26.14" | 15.27" | 14.59" | 26.57" | 17.57" | 27.43" | 20.69" | 19.54" | 28.40" | 14.09" | 18.17" | 16.18" | 20.72" | 18.32" | 28.19" | 24.34" | 15.81" | 11.84" | 12.47" | 30.25" | 24.61" | 23.91" | 22.77" | 21.46" | 25.78" | 10.70" | 24.65" | 22.21" | 18.40" | 22.50" | 19.56" | 24.50" | 23.51" | 15.65" | 16.36" | 24.24" | 17.89" | 16.32" | 23.19" | 16.19" | 20.25" | 33.38" | 21.44" | 16.83" | 22.75" | 22.43" | 22.41" | 21.94" | 17.41" | 21.87" | 21.57" | 12.88" | 15.05" | 15.71" | 16.34" | 16.87" | 11.08" | 25.92" | 24.74" | 18.65" | 20.39" | 25.18" | 16.59" | 15.41" | 15.71" | 19.10" | 20.72" | 12.17" | 24.52" | 20.29" | 21.05" | 11.20" | 19.53" | 24.22" | 17.35" | 23.03" | 16.63" | 21.25" | 15.67" | 23.20" | 15.68" | 21.25" | 22.98" | 20.73" | 15.85" | 26.00" | 22.33" | 29.07" | 15.22" | 20.15" | 18.92" | 22.67" | 31.47" | 23.19" | 19.05" | 24.88" | 11.47" | 26.41" | 18.20" | 24.68" | 17.88" | 25.23" | 17.85" | 22.33" | 25.30" | 22.31" | 13.46" | 29.30" | 14.74" | 14.63" | 24.31" | 8.65" | 20.54" |
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