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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 22.91" | 16.38" | 20.57" | 12.34" | 20.80" | 22.08" | 21.92" | 17.65" | 23.71" | 14.21" | 19.62" | 18.49" | 15.68" | 20.02" | 20.03" | 14.91" | 13.68" | 25.40" | 20.15" | 13.94" | 18.76" | 13.21" | 18.90" | 17.12" | 21.56" | 22.86" | 16.81" | 24.50" | 21.86" | 21.14" | 16.14" | 18.84" | 12.73" | 20.53" | 26.52" | 15.71" | 16.43" | 18.82" | 19.96" | 19.77" | 17.86" | 25.11" | 23.05" | 16.08" | 21.19" | 17.86" | 12.67" | 19.35" | 19.13" | 24.89" | 17.40" | 22.68" | 22.20" | 23.63" | 19.20" | 15.91" | 15.18" | 20.92" | 21.30" | 15.62" | 17.87" | 18.29" | 20.47" | 22.58" | 23.35" | 22.28" | 23.69" | 19.79" | 18.87" | 25.70" | 18.14" | 23.39" | 15.51" | 15.23" | 19.11" | 19.41" | 21.85" | 21.21" | 26.67" | 20.54" | 26.04" | 19.40" | 17.05" | 22.06" | 27.31" | 24.90" | 14.92" | 22.48" | 26.62" | 23.95" | 15.17" | 13.24" | 22.22" | 17.05" | 19.19" | 21.79" | 27.18" | 18.75" | 22.12" | 20.70" | 18.90" | 21.77" | 20.70" | 28.00" | 16.95" | 15.58" | 17.35" | 16.41" | 25.40" | 15.09" | 19.89" | 14.25" | 12.86" | 18.59" | 21.93" | 20.62" | 17.00" | 16.75" |
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