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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 26.19" | 31.44" | 27.31" | 23.54" | 28.56" | 27.87" | 23.78" | 28.60" | 28.89" | 25.71" | 24.96" | 30.43" | 26.67" | 28.65" | 29.16" | 25.86" | 25.89" | 27.68" | 30.56" | 22.63" | 28.65" | 24.52" | 26.32" | 22.27" | 19.27" | 32.04" | 24.00" | 24.59" | 20.99" | 26.09" | 22.16" | 28.13" | 26.05" | 21.59" | 21.88" | 16.57" | 25.55" | 27.88" | 24.75" | 25.35" | 24.66" | 19.78" | 34.19" | 23.98" | 23.25" | 25.58" | 29.56" | 31.29" | 21.60" | 22.13" | 31.63" | 24.53" | 29.50" | 31.20" | 24.83" | 34.21" | 27.58" | 26.45" | 32.20" | 21.12" | 37.42" | 24.31" | 33.30" | 27.64" | 21.78" | 30.06" | 26.03" | 26.72" | 28.52" | 32.79" | 22.84" | 26.15" | 24.03" | 31.96" | 29.21" | 28.64" | 32.77" | 23.68" | 33.66" | 26.57" | 28.78" | 14.83" | 30.35" | 24.73" | 27.10" | 25.16" | 35.20" | 32.81" | 33.08" | 28.65" | 26.39" | 23.36" | 21.43" | 24.31" | 24.64" | 20.91" | 24.76" | 23.71" | 26.08" | 26.15" | 37.12" | 35.76" | 30.08" | 36.48" | 25.67" | 17.05" | 25.18" | 21.47" | 28.31" | 20.03" | 34.27" | 27.28" | 24.20" | 21.05" | 24.83" | 30.81" | 26.29" | 29.02" |
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