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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 16.20" | 13.28" | 19.05" | 18.96" | 16.39" | 13.99" | 16.92" | 18.45" | 15.12" | 11.80" | 13.08" | 15.09" | 19.04" | 14.97" | 14.93" | 12.66" | 15.41" | 15.36" | 16.46" | 16.36" | 14.61" | 13.33" | 14.85" | 13.49" | 16.15" | 14.94" | 14.52" | 13.18" | 16.72" | 10.67" | 17.25" | 17.34" | 21.73" | 12.62" | 14.96" | 10.31" | 13.58" | 16.58" | 13.02" | 15.05" | 15.53" | 18.54" | 17.12" | 14.61" | 12.61" | 13.51" | 13.46" | 16.15" | 14.71" | 16.16" | 16.53" | 13.95" | 12.72" | 19.00" | 14.84" | 19.35" | 19.21" | 15.56" | 14.65" | 16.50" | 16.31" | 12.98" | 18.75" | 14.06" | 21.73" | 12.77" | 14.56" | 15.29" | 15.04" | 13.47" | 14.09" | 13.35" | 13.53" | 16.91" | 17.36" | 18.03" | 15.73" | 20.42" | 17.69" | 15.17" | 18.53" | 14.55" | 22.34" | 19.21" | 12.46" | 14.63" | 16.85" | 13.24" | 21.61" | 12.84" | 17.44" | 15.59" | 13.99" | 13.69" | 16.26" | 19.14" | 13.93" | 15.67" | 18.08" | 13.89" | 22.19" | 19.24" | 18.15" | 14.72" | 14.73" | 12.76" | 10.75" | 17.81" | 18.66" | 16.29" | 24.16" | 19.17" | 21.57" | 17.24" | 18.74" | 19.29" | 16.23" | 16.98" |
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