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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 13.96" | 14.21" | 7.87" | 10.12" | 13.64" | 16.38" | 13.09" | 15.04" | 16.73" | 14.73" | 18.58" | 22.72" | 12.14" | 21.39" | 16.67" | 20.18" | 11.18" | 11.25" | 23.51" | 17.86" | 21.25" | 14.17" | 11.26" | 13.06" | 11.72" | 17.67" | 16.54" | 14.40" | 6.94" | 14.51" | 12.79" | 18.14" | 13.46" | 10.45" | 11.76" | 8.86" | 14.69" | 9.43" | 9.15" | 16.19" | 13.98" | 15.38" | 21.18" | 10.10" | 16.60" | 21.91" | 16.56" | 17.16" | 12.87" | 14.31" | 13.87" | 11.30" | 11.69" | 10.88" | 11.37" | 15.10" | 20.54" | 12.41" | 12.98" | 10.29" | 17.25" | 10.45" | 20.42" | 9.01" | 10.18" | 10.35" | 13.43" | 14.92" | 9.76" | 16.31" | 12.01" | 18.01" | 10.58" | 20.96" | 12.50" | 13.78" | 9.63" | 17.06" | 17.27" | 14.56" | 8.57" | 4.96" | 21.55" | 13.13" | 18.44" | 10.30" | 20.62" | 25.32" | 14.76" | 11.77" | 18.42" | 8.75" | 11.84" | 11.26" | 8.48" | 10.34" | 12.29" | 19.61" | 9.50" | 22.40" | 14.78" | 16.37" | 21.71" | 13.13" | 13.03" | 10.99" | 11.39" | 14.77" | 12.31" | 19.30" | 19.29" | 8.73" | 10.90" | 10.68" | 14.80" | 18.16" | 9.92" | 9.51" |
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