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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 11.26" | 10.39" | 9.23" | 16.48" | 11.78" | 13.07" | 5.67" | 16.81" | 11.11" | 10.76" | 15.16" | 5.76" | 12.60" | 7.72" | 6.71" | 12.58" | 18.57" | 10.76" | 11.17" | 16.29" | 13.07" | 13.52" | 7.53" | 14.61" | 10.62" | 10.22" | 15.10" | 13.68" | 9.59" | 17.39" | 18.46" | 6.93" | 8.18" | 8.16" | 11.82" | 13.37" | 7.77" | 11.85" | 7.64" | 7.47" | 10.80" | 11.53" | 12.17" | 8.93" | 8.71" | 11.19" | 16.16" | 6.52" | 8.02" | 11.68" | 12.12" | 8.52" | 20.00" | 10.64" | 7.76" | 11.28" | 12.74" | 11.87" | 15.48" | 9.93" | 8.07" | 9.14" | 13.97" | 13.95" | 14.34" | 10.11" | 7.36" | 9.81" | 15.00" | 12.88" | 14.27" | 8.89" | 8.77" | 11.55" | 17.01" | 8.03" | 12.70" | 15.36" | 8.58" | 8.48" | 10.68" | 14.16" | 13.71" | 14.16" | 10.88" | 8.18" | 9.77" | 12.50" | 15.75" | 7.07" | 14.99" | 16.94" | 13.59" | 8.65" | 11.81" | 14.77" | 9.23" | 16.17" | 15.93" | 17.28" | 15.67" | 13.41" | 21.68" | 10.78" | 11.42" | 6.82" | 9.01" | 15.21" | 9.87" | 9.22" | 13.23" | 9.69" | 12.44" | 9.11" | 14.60" | 8.04" | 10.50" | 7.33" |
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