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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 20.14" | 26.47" | 18.79" | 31.14" | 28.03" | 27.83" | 23.18" | 31.52" | 18.13" | 21.69" | 24.99" | 19.39" | 27.40" | 23.42" | 17.17" | 20.09" | 34.30" | 25.17" | 20.51" | 25.36" | 21.17" | 24.45" | 19.07" | 29.66" | 28.84" | 22.47" | 27.23" | 25.63" | 24.60" | 21.68" | 28.14" | 20.29" | 27.73" | 26.53" | 25.87" | 22.14" | 22.22" | 32.05" | 19.77" | 23.58" | 30.72" | 31.72" | 22.51" | 24.43" | 20.49" | 20.40" | 25.39" | 24.49" | 28.73" | 22.35" | 27.48" | 25.61" | 34.28" | 31.36" | 19.15" | 22.07" | 27.87" | 26.42" | 23.10" | 22.56" | 21.12" | 24.13" | 30.74" | 26.17" | 31.32" | 25.96" | 27.86" | 24.36" | 31.54" | 29.55" | 24.46" | 20.06" | 21.19" | 25.55" | 25.82" | 27.22" | 27.34" | 35.10" | 25.55" | 28.43" | 22.11" | 27.37" | 29.09" | 29.88" | 28.76" | 18.80" | 28.32" | 34.94" | 33.92" | 18.45" | 22.88" | 32.36" | 22.25" | 22.84" | 28.95" | 32.76" | 23.07" | 32.95" | 28.85" | 27.47" | 31.89" | 27.91" | 39.39" | 20.93" | 22.37" | 21.19" | 18.75" | 33.41" | 21.05" | 26.38" | 22.86" | 23.19" | 25.37" | 25.10" | 32.93" | 21.48" | 21.32" | 26.62" |
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