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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 15.05" | 19.37" | 9.11" | 12.90" | 14.02" | 18.94" | 16.23" | 16.81" | 17.03" | 18.94" | 20.69" | 27.86" | 14.53" | 24.66" | 17.96" | 20.83" | 11.88" | 16.00" | 27.06" | 20.27" | 26.43" | 15.10" | 14.16" | 16.24" | 12.20" | 20.79" | 19.54" | 14.88" | 12.23" | 13.49" | 15.68" | 21.25" | 15.67" | 10.83" | 13.88" | 12.22" | 17.03" | 12.24" | 11.08" | 15.68" | 17.38" | 17.52" | 21.96" | 13.29" | 19.36" | 21.54" | 20.15" | 19.81" | 14.31" | 16.77" | 17.34" | 12.95" | 11.31" | 15.74" | 12.60" | 16.64" | 22.26" | 14.20" | 15.65" | 11.37" | 19.71" | 12.80" | 22.53" | 13.84" | 12.08" | 12.13" | 16.27" | 14.22" | 15.44" | 16.43" | 17.38" | 16.63" | 16.57" | 22.89" | 15.23" | 15.65" | 12.97" | 19.81" | 18.04" | 15.36" | 11.19" | 9.99" | 23.52" | 17.40" | 20.43" | 13.52" | 20.98" | 29.20" | 20.14" | 15.85" | 19.76" | 11.79" | 12.42" | 14.75" | 11.02" | 14.10" | 14.78" | 21.12" | 11.64" | 23.71" | 18.86" | 19.53" | 23.92" | 18.75" | 15.33" | 12.81" | 13.11" | 13.78" | 16.65" | 20.06" | 21.29" | 12.07" | 13.50" | 11.45" | 15.60" | 21.29" | 12.04" | 12.33" |
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