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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 29.29" | 30.60" | 27.19" | 28.38" | 26.49" | 31.68" | 27.38" | 35.81" | 31.55" | 29.32" | 33.54" | 29.20" | 33.00" | 28.53" | 28.07" | 22.31" | 31.85" | 29.43" | 26.95" | 31.08" | 34.17" | 27.87" | 26.63" | 28.13" | 30.28" | 28.56" | 29.88" | 25.38" | 25.96" | 25.91" | 27.46" | 33.72" | 25.47" | 34.29" | 24.77" | 21.51" | 31.42" | 28.33" | 19.89" | 29.05" | 28.28" | 26.39" | 30.02" | 28.94" | 25.43" | 29.92" | 34.00" | 32.16" | 30.30" | 32.07" | 29.51" | 31.37" | 28.39" | 25.61" | 31.48" | 30.30" | 32.86" | 29.47" | 29.27" | 29.01" | 25.70" | 26.41" | 26.65" | 29.09" | 34.24" | 27.52" | 31.66" | 26.55" | 26.20" | 31.22" | 32.08" | 27.16" | 28.40" | 34.54" | 29.24" | 30.49" | 30.23" | 36.62" | 32.38" | 28.87" | 30.80" | 21.34" | 33.23" | 33.54" | 27.15" | 30.04" | 33.24" | 34.41" | 32.77" | 33.67" | 33.74" | 32.01" | 27.23" | 26.94" | 27.49" | 35.62" | 31.16" | 33.98" | 33.16" | 32.76" | 31.17" | 31.53" | 30.59" | 33.09" | 29.01" | 34.84" | 30.44" | 30.47" | 31.49" | 29.79" | 32.18" | 30.41" | 34.50" | 33.28" | 30.54" | 40.06" | 29.84" |
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