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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 12.20" | 15.89" | 12.14" | 11.67" | 12.53" | 11.84" | 11.07" | 9.26" | 8.56" | 18.97" | 13.97" | 14.92" | 13.83" | 10.80" | 10.75" | 10.95" | 15.48" | 12.04" | 14.20" | 20.11" | 13.90" | 12.95" | 8.65" | 16.62" | 16.01" | 12.69" | 15.02" | 9.54" | 16.48" | 8.78" | 16.71" | 11.35" | 14.42" | 13.13" | 13.74" | 16.63" | 16.33" | 12.89" | 12.99" | 11.25" | 13.10" | 14.06" | 11.34" | 14.25" | 12.84" | 20.33" | 20.55" | 12.78" | 12.24" | 12.78" | 9.57" | 13.34" | 11.54" | 12.60" | 11.55" | 12.18" | 10.13" | 10.11" | 9.54" | 11.14" | 9.94" | 9.38" | 16.65" | 13.33" | 12.92" | 14.52" | 12.84" | 12.73" | 11.12" | 10.90" | 13.44" | 10.99" | 15.10" | 12.66" | 14.39" | 9.72" | 12.69" | 20.63" | 8.65" | 16.02" | 11.97" | 11.97" | 13.62" | 16.56" | 13.89" | 10.71" | 14.94" | 15.27" | 12.52" | 19.92" | 15.47" | 21.56" | 13.78" | 14.55" | 12.31" | 14.82" | 21.67" | 14.13" | 14.13" | 13.85" | 9.06" | 18.06" | 15.91" | 15.06" | 12.58" | 15.10" | 8.98" | 12.89" | 12.24" | 18.95" | 8.96" | 20.22" | 11.64" | 13.35" | 14.57" | 11.24" | 10.27" |
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