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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 14.26" | 16.63" | 10.03" | 19.04" | 17.06" | 16.03" | 18.71" | 21.04" | 11.94" | 14.11" | 19.60" | 9.25" | 17.53" | 14.62" | 11.65" | 9.91" | 20.61" | 18.13" | 13.10" | 16.91" | 11.32" | 16.85" | 9.98" | 18.57" | 17.10" | 13.99" | 17.77" | 16.30" | 15.34" | 16.05" | 17.80" | 11.99" | 15.53" | 19.09" | 13.39" | 12.42" | 18.00" | 16.64" | 12.98" | 12.55" | 21.09" | 19.37" | 9.04" | 16.19" | 14.30" | 13.01" | 19.35" | 17.00" | 19.76" | 11.77" | 19.57" | 14.98" | 19.31" | 15.03" | 11.69" | 12.97" | 18.60" | 16.50" | 16.22" | 12.72" | 12.63" | 13.88" | 16.60" | 17.31" | 18.01" | 16.87" | 19.28" | 15.06" | 20.39" | 18.22" | 16.61" | 12.88" | 13.24" | 14.71" | 17.76" | 17.35" | 17.60" | 21.35" | 17.85" | 20.77" | 14.14" | 16.10" | 16.93" | 19.75" | 17.71" | 10.63" | 18.65" | 22.21" | 20.76" | 11.25" | 11.69" | 20.96" | 13.50" | 12.31" | 18.95" | 19.91" | 16.30" | 19.48" | 18.53" | 15.96" | 17.38" | 16.10" | 25.30" | 14.36" | 12.54" | 14.75" | 13.00" | 18.89" | 12.15" | 14.59" | 12.38" | 11.99" | 15.46" | 14.62" | 21.66" | 13.68" | 12.52" | 17.88" |
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