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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 26.92" | 29.34" | 27.91" | 28.20" | 28.33" | 28.14" | 26.94" | 31.94" | 26.69" | 29.75" | 30.90" | 30.78" | 31.34" | 28.62" | 26.21" | 26.28" | 31.61" | 27.04" | 30.10" | 31.51" | 30.42" | 26.11" | 23.69" | 31.01" | 31.10" | 28.98" | 29.74" | 28.84" | 27.49" | 24.70" | 28.59" | 32.16" | 30.45" | 28.38" | 26.22" | 25.39" | 29.76" | 28.65" | 23.40" | 30.28" | 25.42" | 29.77" | 30.46" | 27.09" | 26.38" | 29.99" | 31.84" | 29.07" | 28.55" | 30.49" | 30.44" | 29.77" | 29.47" | 30.51" | 29.96" | 28.56" | 29.20" | 26.87" | 24.71" | 26.61" | 25.81" | 28.66" | 32.51" | 27.40" | 29.74" | 29.01" | 28.98" | 26.26" | 27.06" | 29.28" | 27.19" | 27.76" | 29.03" | 30.19" | 27.84" | 28.81" | 29.97" | 33.63" | 32.26" | 32.05" | 27.36" | 26.31" | 31.37" | 31.72" | 28.39" | 27.60" | 31.05" | 33.13" | 31.85" | 29.01" | 30.37" | 31.03" | 24.97" | 29.80" | 29.53" | 31.43" | 30.58" | 33.03" | 28.92" | 32.47" | 29.95" | 33.50" | 32.60" | 30.58" | 26.12" | 28.25" | 27.18" | 31.13" | 30.98" | 32.42" | 27.53" | 30.42" | 30.42" | 29.92" | 33.19" | 29.04" | 27.18" |
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