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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 25.29" | 35.90" | 29.40" | 30.86" | 24.60" | 24.92" | 27.72" | 34.11" | 23.95" | 24.83" | 21.60" | 30.14" | 28.25" | 30.21" | 20.89" | 26.65" | 39.54" | 32.77" | 19.71" | 22.17" | 30.91" | 32.24" | 21.31" | 27.29" | 35.74" | 28.70" | 33.71" | 35.24" | 27.98" | 23.15" | 20.98" | 40.66" | 26.77" | 29.89" | 25.83" | 19.81" | 37.21" | 29.53" | 23.29" | 29.78" | 24.83" | 34.34" | 23.86" | 33.38" | 22.58" | 16.71" | 21.72" | 25.88" | 29.90" | 30.44" | 34.46" | 26.06" | 30.41" | 38.17" | 34.40" | 31.71" | 33.69" | 29.77" | 27.65" | 31.83" | 30.94" | 32.55" | 31.25" | 22.87" | 24.04" | 26.66" | 39.59" | 24.09" | 30.56" | 30.93" | 19.74" | 21.88" | 27.34" | 25.92" | 29.22" | 23.83" | 27.37" | 38.82" | 37.48" | 36.78" | 23.75" | 22.47" | 25.53" | 37.66" | 30.53" | 19.51" | 27.01" | 30.34" | 31.62" | 22.27" | 16.26" | 26.14" | 25.33" | 36.73" | 28.61" | 38.72" | 27.52" | 25.47" | 39.58" | 23.18" | 27.39" | 36.03" | 29.29" | 28.99" | 24.68" | 25.75" | 31.91" | 30.49" | 27.85" | 31.94" | 25.12" | 19.56" | 27.90" | 27.33" | 23.62" | 32.37" | 28.06" | 31.71" |
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