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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 24.35" | 21.91" | 23.84" | 27.13" | 25.47" | 20.98" | 25.40" | 28.20" | 20.29" | 19.12" | 21.66" | 20.07" | 28.77" | 19.72" | 20.11" | 19.35" | 24.20" | 25.10" | 23.10" | 18.32" | 20.31" | 20.79" | 19.07" | 23.16" | 22.94" | 23.18" | 21.85" | 18.15" | 21.70" | 20.49" | 23.54" | 23.31" | 26.81" | 19.10" | 22.06" | 15.48" | 21.30" | 24.24" | 20.31" | 23.26" | 26.29" | 24.12" | 22.29" | 24.74" | 20.07" | 19.61" | 20.07" | 23.14" | 20.27" | 23.96" | 24.06" | 20.33" | 18.73" | 22.57" | 22.36" | 26.62" | 25.40" | 24.56" | 21.24" | 25.79" | 22.92" | 18.99" | 24.85" | 21.35" | 25.87" | 20.94" | 19.44" | 22.49" | 21.29" | 17.33" | 20.11" | 20.91" | 20.64" | 21.90" | 23.43" | 24.41" | 23.44" | 26.37" | 25.65" | 23.61" | 28.09" | 22.79" | 31.14" | 24.93" | 22.52" | 19.10" | 24.29" | 21.06" | 28.04" | 17.91" | 24.36" | 21.13" | 21.64" | 19.54" | 23.11" | 26.54" | 21.74" | 24.11" | 28.22" | 19.51" | 27.78" | 28.97" | 25.33" | 21.55" | 26.44" | 21.39" | 18.32" | 25.44" | 26.82" | 25.73" | 28.55" | 27.43" | 29.01" | 24.68" | 26.46" | 27.73" | 25.49" | 24.08" |
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