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.
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 21.96" | 31.79" | 25.40" | 24.16" | 28.44" | 28.09" | 24.02" | 27.65" | 31.49" | 25.21" | 32.75" | 30.07" | 21.86" | 29.86" | 27.71" | 14.62" | 28.20" | 22.27" | 25.71" | 27.99" | 29.45" | 26.92" | 20.58" | 24.00" | 27.63" | 24.77" | 22.63" | 22.47" | 19.05" | 24.98" | 23.60" | 24.27" | 24.07" | 26.17" | 20.41" | 21.99" | 23.30" | 21.49" | 20.30" | 20.62" | 25.08" | 18.73" | 24.91" | 27.60" | 20.77" | 25.68" | 28.34" | 28.76" | 26.31" | 30.17" | 26.69" | 27.88" | 25.16" | 23.80" | 26.64" | 24.91" | 31.54" | 22.39" | 30.36" | 24.19" | 25.19" | 23.84" | 29.63" | 20.13" | 26.60" | 23.77" | 23.44" | 27.92" | 24.18" | 26.32" | 33.60" | 25.81" | 20.10" | 35.07" | 23.13" | 27.74" | 29.09" | 27.01" | 27.92" | 25.13" | 26.64" | 15.44" | 33.68" | 26.39" | 28.54" | 20.91" | 29.37" | 29.27" | 29.48" | 28.25" | 31.03" | 31.50" | 22.74" | 22.22" | 21.99" | 26.58" | 32.78" | 25.90" | 31.66" | 28.14" | 31.10" | 27.91" | 25.04" | 29.60" | 29.37" | 28.47" | 29.15" | 29.02" | 22.75" | 31.33" | 31.35" | 23.50" | 29.90" | 28.25" | 27.26" | 34.52" | 24.40" | 26.15" |
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