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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 20.41" | 26.52" | 18.78" | 32.79" | 25.55" | 27.04" | 26.88" | 34.17" | 20.32" | 21.07" | 27.35" | 20.31" | 29.47" | 23.72" | 17.75" | 18.69" | 31.99" | 29.50" | 23.10" | 28.63" | 22.75" | 24.64" | 19.44" | 31.63" | 24.52" | 23.91" | 26.92" | 24.57" | 23.13" | 28.79" | 27.67" | 22.23" | 22.84" | 31.55" | 31.10" | 24.38" | 22.27" | 31.34" | 20.34" | 23.59" | 31.24" | 29.49" | 21.39" | 25.10" | 20.46" | 19.87" | 26.65" | 26.14" | 26.84" | 23.32" | 31.99" | 25.57" | 36.15" | 32.05" | 21.09" | 23.44" | 29.74" | 25.50" | 26.75" | 20.75" | 21.92" | 25.37" | 33.68" | 25.05" | 33.56" | 27.61" | 25.74" | 26.83" | 30.33" | 31.46" | 25.58" | 23.52" | 21.34" | 24.94" | 28.18" | 26.81" | 29.37" | 32.48" | 26.13" | 29.65" | 27.69" | 29.50" | 31.01" | 25.99" | 33.40" | 21.40" | 25.86" | 32.57" | 33.79" | 19.05" | 24.98" | 32.85" | 24.10" | 25.28" | 32.35" | 30.05" | 22.99" | 33.80" | 30.13" | 29.45" | 32.20" | 29.10" | 39.27" | 25.06" | 25.80" | 25.81" | 21.49" | 34.22" | 23.26" | 31.22" | 22.41" | 25.41" | 24.57" | 24.29" | 36.33" | 22.67" | 24.38" | 26.09" |
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