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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 18.24" | 20.88" | 18.49" | 17.71" | 19.72" | 20.32" | 17.62" | 20.31" | 22.49" | 15.43" | 17.48" | 21.49" | 17.09" | 21.36" | 24.17" | 20.59" | 20.16" | 17.47" | 20.69" | 15.68" | 20.97" | 13.79" | 18.43" | 17.62" | 13.08" | 23.54" | 16.70" | 16.99" | 13.48" | 22.83" | 14.97" | 23.10" | 18.42" | 13.31" | 15.09" | 10.77" | 17.02" | 17.61" | 15.82" | 18.34" | 17.01" | 12.09" | 22.44" | 14.73" | 17.81" | 17.79" | 19.39" | 22.70" | 11.76" | 14.25" | 21.16" | 16.54" | 19.47" | 18.67" | 18.67" | 24.92" | 20.99" | 18.30" | 20.75" | 12.25" | 28.42" | 15.36" | 22.28" | 17.95" | 14.65" | 18.87" | 16.23" | 17.67" | 17.30" | 24.17" | 15.23" | 19.19" | 16.17" | 23.02" | 21.38" | 21.76" | 22.18" | 14.08" | 27.88" | 17.11" | 18.75" | 5.80" | 21.51" | 14.25" | 18.31" | 16.25" | 25.94" | 23.28" | 19.19" | 16.50" | 19.36" | 16.28" | 12.79" | 15.31" | 13.54" | 11.85" | 13.02" | 16.42" | 11.08" | 19.56" | 24.64" | 25.67" | 19.41" | 24.93" | 18.19" | 10.13" | 17.79" | 15.09" | 18.37" | 11.51" | 22.65" | 18.29" | 17.67" | 13.39" | 15.14" | 18.95" | 13.94" | 16.63" |
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