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.
| 1895 | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 13.21" | 10.15" | 12.39" | 7.07" | 7.02" | 19.80" | 10.88" | 11.99" | 11.84" | 10.07" | 20.54" | 11.73" | 23.25" | 14.41" | 14.39" | 8.79" | 12.99" | 20.88" | 15.15" | 15.09" | 9.30" | 12.88" | 9.35" | 11.10" | 18.12" | 12.17" | 15.04" | 20.48" | 20.32" | 12.51" | 5.63" | 22.92" | 19.36" | 15.06" | 15.10" | 10.68" | 9.37" | 11.74" | 17.49" | 14.45" | 20.13" | 11.33" | 11.35" | 13.82" | 11.65" | 14.80" | 15.93" | 15.23" | 13.66" | 18.06" | 15.31" | 21.67" | 19.53" | 13.64" | 16.97" | 17.49" | 10.94" | 16.33" | 26.17" | 12.31" | 14.09" | 11.61" | 18.26" | 16.68" | 13.98" | 9.25" | 15.23" | 10.37" | 5.75" | 16.15" | 9.87" | 14.01" | 14.53" | 15.93" | 18.39" | 12.92" | 10.54" | 13.53" | 23.67" | 16.24" | 21.48" | 13.15" | 14.49" | 11.07" | 19.67" | 27.78" | 10.41" | 11.55" | 20.83" | 12.30" | 9.98" | 10.79" | 10.48" | 13.72" | 16.76" | 15.61" | 30.02" | 12.08" | 18.06" | 15.04" | 24.02" | 10.73" | 18.98" | 9.53" | 12.83" | 14.75" | 13.12" | 11.79" | 9.70" | 17.09" | 10.30" | 9.78" | 10.63" | 12.80" | 16.36" | 7.48" | 7.86" | 15.00" |
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