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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 20.59" | 21.66" | 22.00" | 16.96" | 17.60" | 14.53" | 13.70" | 19.00" | 13.58" | 13.93" | 10.52" | 18.06" | 14.69" | 14.02" | 18.30" | 14.83" | 15.56" | 16.37" | 16.97" | 10.84" | 16.81" | 11.83" | 19.14" | 14.20" | 14.67" | 16.60" | 12.99" | 14.59" | 11.33" | 15.51" | 12.55" | 16.36" | 17.69" | 10.50" | 9.29" | 11.40" | 16.43" | 21.07" | 24.70" | 21.63" | 13.78" | 9.89" | 19.70" | 14.43" | 13.57" | 13.15" | 13.99" | 17.42" | 8.82" | 12.16" | 18.83" | 16.76" | 13.71" | 15.18" | 19.24" | 20.26" | 14.79" | 19.33" | 21.17" | 13.41" | 23.23" | 11.00" | 16.07" | 22.35" | 14.19" | 16.84" | 13.94" | 13.88" | 19.63" | 20.87" | 15.61" | 21.15" | 15.32" | 19.86" | 16.15" | 20.51" | 19.47" | 15.80" | 26.28" | 20.23" | 21.15" | 6.02" | 19.87" | 9.35" | 15.49" | 16.88" | 18.95" | 18.34" | 19.92" | 12.89" | 12.68" | 15.46" | 14.09" | 16.44" | 17.37" | 17.68" | 17.35" | 13.86" | 11.21" | 19.45" | 22.21" | 23.67" | 15.20" | 24.69" | 19.14" | 8.33" | 19.65" | 17.54" | 16.29" | 12.23" | 21.93" | 23.32" | 16.23" | 17.39" | 15.98" | 18.50" | 14.12" | 17.80" |
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