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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 16.17" | 19.47" | 15.94" | 17.46" | 17.39" | 17.65" | 15.86" | 20.28" | 15.53" | 16.69" | 18.20" | 18.85" | 18.45" | 17.15" | 16.33" | 16.30" | 20.05" | 17.53" | 19.34" | 17.52" | 18.61" | 16.30" | 14.24" | 19.31" | 19.56" | 18.27" | 18.97" | 16.96" | 17.69" | 15.38" | 18.05" | 20.57" | 17.90" | 17.85" | 17.03" | 15.61" | 18.95" | 18.24" | 14.74" | 18.24" | 16.83" | 19.19" | 18.80" | 16.54" | 15.67" | 17.79" | 19.65" | 17.81" | 17.35" | 18.61" | 18.69" | 18.51" | 18.42" | 18.82" | 17.92" | 17.39" | 19.43" | 16.27" | 15.19" | 15.64" | 16.14" | 16.43" | 20.76" | 15.98" | 18.74" | 17.58" | 18.24" | 16.11" | 16.69" | 17.95" | 17.31" | 16.02" | 17.04" | 18.93" | 17.79" | 17.73" | 18.46" | 22.63" | 21.01" | 19.78" | 17.03" | 15.23" | 19.83" | 19.77" | 18.56" | 14.87" | 18.90" | 22.36" | 20.64" | 18.21" | 18.91" | 19.49" | 16.07" | 17.21" | 17.73" | 19.65" | 18.38" | 20.55" | 17.97" | 19.95" | 18.08" | 21.95" | 21.49" | 19.49" | 15.79" | 17.16" | 16.91" | 19.12" | 18.00" | 20.75" | 17.31" | 19.14" | 18.49" | 17.84" | 20.61" | 18.41" | 17.50" | 17.39" |
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