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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 17.26" | 10.80" | 18.10" | 14.47" | 16.49" | 13.47" | 14.06" | 22.08" | 9.37" | 18.93" | 11.19" | 11.63" | 17.53" | 14.23" | 14.79" | 11.41" | 19.71" | 23.30" | 9.12" | 18.31" | 14.40" | 15.81" | 10.12" | 14.93" | 15.35" | 15.56" | 16.88" | 17.96" | 18.22" | 17.52" | 12.28" | 18.67" | 11.71" | 14.64" | 12.17" | 10.72" | 27.85" | 20.04" | 12.50" | 12.66" | 14.91" | 21.28" | 12.02" | 18.41" | 13.10" | 13.05" | 11.76" | 12.00" | 15.44" | 18.33" | 21.94" | 15.16" | 17.05" | 18.52" | 19.76" | 16.66" | 16.30" | 17.56" | 15.20" | 14.75" | 14.60" | 16.00" | 10.79" | 10.80" | 15.06" | 18.11" | 23.95" | 10.47" | 14.22" | 16.35" | 19.69" | 11.78" | 18.34" | 14.45" | 14.04" | 14.87" | 19.83" | 18.64" | 23.19" | 18.90" | 11.12" | 12.52" | 11.30" | 24.03" | 12.67" | 7.28" | 15.74" | 27.60" | 18.23" | 12.35" | 7.35" | 19.26" | 12.66" | 16.83" | 23.21" | 23.16" | 17.91" | 15.08" | 16.70" | 13.75" | 15.03" | 18.91" | 20.54" | 18.33" | 8.85" | 16.14" | 15.48" | 17.72" | 16.09" | 14.92" | 17.05" | 13.43" | 13.99" | 15.54" | 18.36" | 8.44" | 15.80" | 23.71" |
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