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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 14.97" | 19.26" | 15.54" | 16.31" | 15.60" | 16.50" | 17.18" | 17.63" | 18.12" | 14.94" | 19.25" | 20.92" | 16.16" | 20.65" | 19.38" | 14.32" | 16.95" | 18.56" | 16.46" | 16.99" | 23.12" | 17.45" | 14.70" | 16.43" | 14.62" | 16.89" | 16.59" | 16.37" | 20.17" | 15.45" | 16.54" | 15.70" | 20.38" | 16.43" | 15.72" | 15.43" | 13.94" | 16.38" | 14.68" | 11.50" | 16.18" | 10.97" | 15.33" | 17.23" | 13.37" | 15.14" | 20.09" | 19.39" | 15.55" | 19.63" | 16.39" | 19.13" | 18.00" | 17.39" | 15.76" | 17.03" | 19.21" | 13.30" | 16.80" | 15.40" | 15.38" | 13.78" | 19.20" | 15.39" | 15.96" | 13.75" | 15.62" | 19.10" | 16.45" | 17.62" | 19.25" | 15.26" | 16.47" | 18.97" | 15.07" | 17.73" | 17.66" | 16.88" | 18.08" | 14.18" | 18.54" | 13.34" | 20.12" | 18.46" | 14.99" | 14.67" | 17.64" | 20.31" | 17.59" | 16.69" | 17.09" | 19.88" | 16.39" | 13.23" | 15.05" | 15.33" | 18.40" | 17.29" | 22.31" | 15.95" | 20.84" | 18.36" | 17.73" | 20.16" | 17.66" | 15.92" | 15.52" | 14.18" | 15.38" | 16.61" | 18.94" | 15.47" | 18.58" | 19.59" | 18.04" | 21.47" | 19.39" | 12.34" |
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