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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 16.96" | 22.41" | 19.58" | 31.74" | 20.59" | 16.71" | 19.51" | 17.96" | 17.45" | 17.25" | 19.94" | 21.19" | 17.91" | 20.28" | 13.40" | 16.18" | 18.67" | 14.98" | 17.93" | 15.12" | 16.92" | 21.90" | 21.49" | 16.36" | 25.46" | 19.02" | 15.84" | 26.85" | 15.88" | 16.28" | 17.51" | 19.47" | 27.51" | 21.34" | 15.87" | 15.14" | 21.97" | 28.15" | 21.59" | 16.25" | 16.88" | 18.33" | 19.95" | 28.91" | 17.10" | 16.18" | 16.94" | 19.96" | 14.61" | 14.88" | 15.26" | 22.70" | 20.77" | 22.79" | 13.65" | 14.86" | 16.15" | 18.86" | 21.04" | 28.78" | 30.32" | 16.50" | 11.32" | 25.90" | 22.57" | 22.94" | 25.98" | 26.52" | 18.04" | 13.25" | 12.90" | 19.15" | 23.73" | 15.17" | 17.72" | 20.12" | 16.40" | 28.62" | 23.81" | 19.20" | 25.03" | 22.89" | 26.04" | 22.09" | 24.86" | 14.62" | 17.12" | 25.08" | 17.54" | 25.90" | 25.49" | 20.55" | 17.66" | 16.53" | 33.59" | 22.96" | 22.35" | 23.57" | 15.56" | 16.94" | 19.84" | 27.88" | 16.39" | 28.71" | 21.80" | 21.62" | 23.01" | 22.31" | 28.43" | 23.74" | 30.27" | 35.93" | 16.08" | 24.61" | 29.22" | 21.61" | 33.64" | 26.91" |
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