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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 15.93" | 17.77" | 17.35" | 14.96" | 14.91" | 14.69" | 15.06" | 12.48" | 10.00" | 23.15" | 16.96" | 16.91" | 17.88" | 13.12" | 14.07" | 13.15" | 19.73" | 16.45" | 15.56" | 26.76" | 18.29" | 15.32" | 11.95" | 20.66" | 21.16" | 14.95" | 19.58" | 12.50" | 20.28" | 11.29" | 19.67" | 15.39" | 15.26" | 15.67" | 18.96" | 22.15" | 20.74" | 18.68" | 14.44" | 11.44" | 17.40" | 17.47" | 16.68" | 18.14" | 15.57" | 21.70" | 28.79" | 16.84" | 16.39" | 15.33" | 11.61" | 15.41" | 12.73" | 13.71" | 15.38" | 15.68" | 12.31" | 13.81" | 11.29" | 14.30" | 13.77" | 11.66" | 22.70" | 16.34" | 17.13" | 16.13" | 17.01" | 16.12" | 13.79" | 12.98" | 18.82" | 12.73" | 19.42" | 15.18" | 19.09" | 11.95" | 15.66" | 26.06" | 12.71" | 21.26" | 13.19" | 17.20" | 16.97" | 20.30" | 16.99" | 13.82" | 17.44" | 18.92" | 14.85" | 24.44" | 19.06" | 27.08" | 18.23" | 19.69" | 15.61" | 18.56" | 23.44" | 18.82" | 16.27" | 19.91" | 12.48" | 22.32" | 22.84" | 16.55" | 15.11" | 18.75" | 12.31" | 15.48" | 13.90" | 20.46" | 11.79" | 24.72" | 14.33" | 16.63" | 18.78" | 13.12" | 10.90" | 10.44" |
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