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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 18.11" | 18.26" | 18.65" | 15.94" | 22.78" | 15.04" | 16.75" | 24.64" | 13.97" | 23.90" | 18.37" | 20.34" | 23.89" | 15.84" | 17.51" | 15.68" | 21.75" | 18.02" | 21.43" | 22.27" | 17.11" | 14.29" | 13.43" | 24.23" | 19.86" | 18.89" | 23.48" | 23.25" | 21.35" | 12.76" | 19.49" | 21.66" | 17.06" | 23.36" | 19.74" | 18.40" | 23.92" | 20.32" | 17.00" | 24.03" | 15.95" | 17.14" | 21.80" | 18.57" | 17.17" | 25.05" | 17.28" | 16.27" | 24.21" | 24.89" | 22.21" | 23.03" | 20.28" | 24.64" | 18.63" | 15.37" | 18.10" | 21.60" | 16.26" | 17.35" | 13.54" | 25.51" | 22.12" | 15.94" | 16.73" | 20.04" | 18.07" | 12.45" | 18.39" | 18.91" | 19.01" | 14.22" | 21.52" | 22.00" | 17.98" | 12.30" | 17.62" | 26.12" | 20.12" | 23.14" | 17.47" | 18.33" | 17.66" | 25.72" | 21.06" | 16.84" | 17.95" | 25.98" | 18.92" | 20.61" | 15.82" | 23.27" | 18.73" | 20.00" | 24.29" | 24.97" | 24.07" | 24.56" | 19.23" | 23.17" | 13.45" | 24.58" | 20.16" | 21.69" | 15.79" | 23.56" | 19.51" | 17.05" | 20.72" | 20.93" | 14.27" | 22.47" | 18.70" | 17.77" | 19.00" | 13.52" | 21.11" | 18.70" |
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