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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 18.25" | 24.54" | 15.63" | 25.53" | 23.99" | 23.63" | 21.89" | 27.39" | 15.70" | 20.14" | 22.14" | 15.46" | 26.25" | 20.00" | 15.36" | 15.57" | 29.84" | 22.62" | 17.42" | 21.54" | 15.83" | 21.81" | 16.89" | 24.47" | 25.62" | 21.41" | 23.88" | 21.12" | 22.67" | 18.90" | 24.05" | 18.20" | 24.69" | 24.08" | 20.23" | 20.06" | 20.91" | 26.05" | 17.62" | 19.95" | 29.21" | 27.25" | 17.13" | 22.67" | 18.88" | 19.33" | 22.77" | 21.66" | 27.50" | 19.13" | 24.80" | 22.61" | 29.98" | 28.38" | 15.79" | 18.34" | 25.50" | 24.15" | 21.48" | 19.88" | 18.55" | 19.73" | 27.89" | 23.33" | 23.99" | 23.07" | 26.37" | 22.30" | 31.01" | 23.52" | 21.23" | 16.69" | 18.76" | 21.84" | 23.11" | 22.38" | 22.32" | 31.97" | 23.65" | 27.42" | 18.02" | 22.24" | 25.22" | 28.83" | 26.75" | 15.46" | 25.49" | 31.77" | 30.63" | 16.00" | 18.05" | 28.68" | 21.09" | 20.26" | 25.13" | 26.75" | 21.43" | 29.49" | 24.65" | 21.93" | 24.98" | 24.00" | 35.17" | 19.28" | 18.55" | 20.53" | 16.98" | 28.58" | 18.16" | 24.01" | 18.59" | 19.35" | 21.17" | 21.81" | 28.62" | 19.45" | 18.20" | 23.65" |
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