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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 29.64" | 29.87" | 28.16" | 28.64" | 32.70" | 31.13" | 26.84" | 38.42" | 26.08" | 35.64" | 31.84" | 36.21" | 35.63" | 28.73" | 26.79" | 25.27" | 34.31" | 28.13" | 35.98" | 35.19" | 31.96" | 24.25" | 22.46" | 35.94" | 36.92" | 33.87" | 32.79" | 32.12" | 36.15" | 20.05" | 34.10" | 36.03" | 29.40" | 34.40" | 30.34" | 29.87" | 34.02" | 33.25" | 29.39" | 32.57" | 27.03" | 30.22" | 33.22" | 27.10" | 25.42" | 36.40" | 35.59" | 31.01" | 33.38" | 36.26" | 36.90" | 34.90" | 27.48" | 33.99" | 33.40" | 29.86" | 29.53" | 27.91" | 26.86" | 25.43" | 24.61" | 32.20" | 34.83" | 31.32" | 32.53" | 34.91" | 31.55" | 24.56" | 26.86" | 30.46" | 30.18" | 26.40" | 35.41" | 34.13" | 30.32" | 25.87" | 33.57" | 40.29" | 37.19" | 39.66" | 29.23" | 31.25" | 29.31" | 35.31" | 34.39" | 26.83" | 32.27" | 35.02" | 28.73" | 34.67" | 31.39" | 38.43" | 28.74" | 32.30" | 35.35" | 36.71" | 37.83" | 35.94" | 31.28" | 36.73" | 24.28" | 40.86" | 32.13" | 36.74" | 24.08" | 31.23" | 31.92" | 33.86" | 32.61" | 34.45" | 26.51" | 36.05" | 32.80" | 32.89" | 38.62" | 25.53" | 29.41" |
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