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.
| 1895 | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 19.54" | 18.01" | 17.15" | 16.43" | 19.40" | 16.97" | 16.43" | 18.56" | 21.36" | 12.13" | 17.74" | 18.74" | 17.53" | 18.95" | 18.56" | 14.44" | 13.85" | 20.76" | 18.53" | 14.40" | 17.68" | 15.46" | 17.38" | 16.82" | 21.44" | 18.70" | 15.71" | 16.50" | 18.96" | 24.00" | 14.23" | 14.06" | 13.62" | 17.09" | 19.62" | 12.77" | 16.51" | 22.56" | 21.45" | 22.06" | 19.32" | 21.98" | 22.63" | 14.56" | 20.98" | 20.54" | 13.10" | 14.43" | 17.01" | 19.68" | 16.84" | 16.12" | 17.45" | 27.88" | 19.59" | 16.19" | 14.42" | 23.87" | 22.10" | 15.14" | 12.38" | 15.41" | 13.08" | 23.89" | 11.70" | 15.92" | 21.95" | 17.21" | 14.43" | 17.79" | 12.05" | 17.16" | 14.21" | 13.73" | 14.12" | 16.03" | 19.11" | 19.97" | 18.31" | 16.32" | 22.45" | 13.51" | 11.09" | 23.44" | 25.64" | 18.51" | 15.87" | 17.56" | 25.34" | 25.84" | 13.14" | 12.26" | 17.73" | 18.09" | 22.72" | 21.23" | 17.04" | 13.75" | 20.71" | 25.03" | 14.70" | 22.64" | 17.10" | 24.29" | 18.01" | 20.30" | 17.22" | 15.59" | 20.73" | 15.99" | 19.54" | 10.85" | 17.64" | 17.15" | 16.09" | 17.40" | 16.13" | 8.35" |
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