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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 25.38" | 25.96" | 31.33" | 30.24" | 27.31" | 23.25" | 29.60" | 30.85" | 25.94" | 24.53" | 25.96" | 25.42" | 31.28" | 23.98" | 24.12" | 21.57" | 28.02" | 27.60" | 25.23" | 25.37" | 29.02" | 23.89" | 25.29" | 25.62" | 28.30" | 28.37" | 24.97" | 23.05" | 25.66" | 23.56" | 27.94" | 29.54" | 33.25" | 25.36" | 23.22" | 17.80" | 26.00" | 27.51" | 26.76" | 27.78" | 27.35" | 28.36" | 27.81" | 30.69" | 22.20" | 23.71" | 23.45" | 28.74" | 23.87" | 26.36" | 30.50" | 25.64" | 23.63" | 27.34" | 26.02" | 30.29" | 29.67" | 26.10" | 23.86" | 29.20" | 28.98" | 25.30" | 26.70" | 27.38" | 31.81" | 25.01" | 24.89" | 26.01" | 24.89" | 21.88" | 24.19" | 23.51" | 26.38" | 24.55" | 29.25" | 28.84" | 28.57" | 30.04" | 28.45" | 27.49" | 33.95" | 27.52" | 36.40" | 29.02" | 26.04" | 24.80" | 29.26" | 22.31" | 30.60" | 23.16" | 29.17" | 28.08" | 26.73" | 25.71" | 28.71" | 31.90" | 26.29" | 29.20" | 28.84" | 26.86" | 31.04" | 33.95" | 29.23" | 23.87" | 29.12" | 24.48" | 20.48" | 27.14" | 33.79" | 33.57" | 35.07" | 32.42" | 32.06" | 31.33" | 32.03" | 30.35" | 34.76" | 29.01" |
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