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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 26.66" | 28.68" | 28.11" | 28.70" | 27.43" | 29.88" | 26.63" | 29.46" | 28.42" | 26.84" | 31.84" | 31.73" | 30.17" | 29.17" | 30.64" | 24.37" | 28.94" | 29.75" | 29.31" | 28.27" | 32.06" | 28.90" | 24.44" | 27.95" | 30.99" | 30.39" | 27.94" | 29.11" | 30.75" | 25.95" | 25.94" | 30.12" | 31.15" | 28.67" | 29.50" | 25.09" | 26.79" | 29.60" | 26.80" | 25.05" | 28.85" | 26.59" | 29.72" | 28.85" | 25.82" | 29.63" | 31.85" | 30.58" | 26.07" | 30.08" | 32.25" | 30.42" | 28.57" | 29.65" | 29.70" | 29.99" | 30.33" | 25.63" | 27.51" | 25.23" | 26.81" | 24.57" | 32.90" | 29.25" | 29.88" | 27.95" | 30.41" | 27.80" | 24.77" | 29.23" | 28.95" | 26.67" | 28.61" | 29.52" | 29.79" | 28.54" | 29.29" | 30.77" | 33.99" | 29.72" | 32.02" | 25.62" | 29.62" | 29.17" | 32.02" | 27.38" | 29.17" | 32.99" | 33.81" | 30.48" | 29.41" | 30.61" | 28.46" | 25.25" | 28.42" | 31.40" | 31.77" | 30.67" | 31.97" | 30.04" | 31.69" | 32.59" | 31.29" | 32.97" | 27.84" | 27.73" | 28.58" | 28.66" | 29.95" | 32.88" | 29.84" | 29.41" | 28.93" | 30.86" | 31.87" | 30.89" | 28.96" | 26.57" |
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