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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 27.57" | 31.12" | 21.00" | 26.80" | 22.46" | 31.78" | 25.43" | 29.05" | 28.85" | 29.91" | 29.38" | 26.49" | 29.83" | 23.82" | 20.82" | 21.25" | 27.34" | 24.89" | 27.47" | 28.74" | 27.84" | 23.50" | 19.97" | 29.24" | 25.99" | 22.13" | 22.17" | 21.83" | 19.84" | 26.39" | 19.02" | 28.72" | 22.31" | 23.94" | 23.03" | 19.99" | 24.47" | 20.99" | 17.97" | 26.16" | 19.45" | 25.03" | 26.97" | 22.82" | 21.44" | 27.21" | 29.77" | 29.23" | 29.07" | 26.40" | 25.68" | 26.59" | 25.50" | 26.07" | 25.99" | 26.21" | 29.68" | 27.31" | 25.51" | 24.38" | 23.69" | 28.39" | 22.58" | 22.03" | 27.14" | 22.74" | 30.07" | 24.51" | 22.73" | 30.96" | 28.08" | 25.83" | 24.96" | 30.05" | 24.17" | 27.82" | 30.34" | 25.00" | 27.81" | 27.38" | 21.76" | 21.67" | 31.78" | 28.25" | 20.65" | 27.90" | 27.52" | 29.92" | 29.83" | 29.63" | 33.18" | 25.81" | 17.89" | 26.35" | 27.03" | 28.65" | 26.86" | 32.57" | 26.90" | 28.27" | 27.88" | 30.15" | 27.01" | 32.24" | 26.02" | 30.82" | 28.21" | 26.42" | 24.50" | 30.54" | 28.03" | 25.77" | 30.47" | 25.67" | 30.94" | 36.07" | 25.13" |
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