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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 21.40" | 23.13" | 20.01" | 19.98" | 18.74" | 17.77" | 18.53" | 19.93" | 23.26" | 14.75" | 15.10" | 22.32" | 17.41" | 17.64" | 21.88" | 16.80" | 18.88" | 16.96" | 18.86" | 13.06" | 23.44" | 17.30" | 20.01" | 17.71" | 15.19" | 20.58" | 17.13" | 15.64" | 12.38" | 19.22" | 14.21" | 21.66" | 20.52" | 14.17" | 15.76" | 14.10" | 20.60" | 19.67" | 18.77" | 19.80" | 17.25" | 16.74" | 23.42" | 14.73" | 20.35" | 13.96" | 16.75" | 23.25" | 11.96" | 17.51" | 21.45" | 17.38" | 18.34" | 18.54" | 22.42" | 20.93" | 17.65" | 20.41" | 21.23" | 16.26" | 24.35" | 16.28" | 20.62" | 20.40" | 16.88" | 21.70" | 16.62" | 17.80" | 18.53" | 23.12" | 16.59" | 21.31" | 16.31" | 20.84" | 19.32" | 23.23" | 24.00" | 14.51" | 28.09" | 21.14" | 19.91" | 8.01" | 21.55" | 15.36" | 17.91" | 18.46" | 24.66" | 22.73" | 22.16" | 14.80" | 18.10" | 15.75" | 16.77" | 19.81" | 16.58" | 17.13" | 15.60" | 18.66" | 13.48" | 22.04" | 25.66" | 26.84" | 17.52" | 25.02" | 19.54" | 10.76" | 19.48" | 20.34" | 17.38" | 13.45" | 23.18" | 20.92" | 17.43" | 17.55" | 17.21" | 22.34" | 19.35" | 17.39" |
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