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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 24.29" | 26.96" | 23.26" | 28.68" | 23.36" | 26.74" | 19.86" | 31.49" | 29.56" | 29.82" | 27.81" | 25.77" | 23.84" | 29.21" | 24.42" | 18.86" | 21.30" | 25.45" | 17.70" | 21.91" | 38.47" | 21.58" | 18.69" | 22.69" | 23.18" | 23.92" | 23.29" | 25.74" | 29.83" | 21.69" | 22.98" | 22.08" | 30.92" | 27.64" | 25.72" | 23.65" | 20.96" | 22.20" | 19.62" | 16.96" | 25.02" | 17.19" | 19.58" | 25.30" | 18.23" | 21.14" | 34.51" | 29.92" | 22.42" | 32.63" | 28.39" | 24.93" | 23.65" | 26.72" | 31.36" | 26.34" | 40.18" | 16.13" | 17.48" | 19.45" | 21.87" | 14.11" | 31.84" | 30.31" | 27.81" | 26.06" | 31.61" | 26.61" | 19.86" | 20.60" | 30.34" | 16.63" | 28.01" | 24.02" | 29.96" | 23.22" | 24.35" | 23.77" | 36.60" | 22.01" | 22.86" | 21.06" | 30.86" | 21.05" | 27.28" | 20.25" | 26.86" | 25.92" | 23.56" | 26.07" | 31.58" | 29.71" | 29.48" | 18.58" | 26.29" | 26.22" | 19.53" | 28.48" | 36.94" | 21.98" | 28.78" | 28.49" | 27.50" | 28.02" | 28.51" | 23.60" | 27.38" | 21.79" | 24.00" | 28.56" | 29.58" | 22.14" | 31.32" | 32.69" | 30.18" | 26.70" | 19.69" | 18.55" |
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