Choose from the options below and click "Plot" to create a time series graph.
Data are available from January 1895 through May 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 15.15" | 16.28" | 17.65" | 13.58" | 20.38" | 13.25" | 15.19" | 19.72" | 13.55" | 22.97" | 15.31" | 18.01" | 19.98" | 13.24" | 14.37" | 14.95" | 19.98" | 17.06" | 18.50" | 19.72" | 15.47" | 12.65" | 12.35" | 20.71" | 16.39" | 16.67" | 22.05" | 20.39" | 18.55" | 11.85" | 16.52" | 19.85" | 15.68" | 20.36" | 16.31" | 15.34" | 20.35" | 19.02" | 15.85" | 19.73" | 13.53" | 15.56" | 19.68" | 16.33" | 15.27" | 19.84" | 15.75" | 14.98" | 22.54" | 21.25" | 20.87" | 18.23" | 16.94" | 20.74" | 18.43" | 14.47" | 16.31" | 18.12" | 14.42" | 16.19" | 12.44" | 23.78" | 17.25" | 13.98" | 15.26" | 18.55" | 13.94" | 10.53" | 15.74" | 15.70" | 17.64" | 13.32" | 20.30" | 18.15" | 16.20" | 11.34" | 15.73" | 22.43" | 17.04" | 19.68" | 15.05" | 16.73" | 14.32" | 22.09" | 18.64" | 14.61" | 16.10" | 22.30" | 15.76" | 17.74" | 13.03" | 19.14" | 14.90" | 17.43" | 22.81" | 22.24" | 21.60" | 20.10" | 16.91" | 20.08" | 11.55" | 20.67" | 17.79" | 18.17" | 15.01" | 17.93" | 16.00" | 15.06" | 18.27" | 14.45" | 12.96" | 20.69" | 17.35" | 16.16" | 17.67" | 11.26" | 18.15" | 17.88" |
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