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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 16.54" | 17.37" | 9.18" | 12.88" | 15.52" | 18.38" | 16.14" | 16.37" | 17.60" | 18.47" | 21.15" | 27.25" | 14.19" | 24.32" | 18.23" | 21.68" | 12.80" | 14.85" | 27.68" | 20.28" | 25.16" | 16.08" | 13.36" | 16.29" | 13.37" | 19.52" | 19.75" | 16.82" | 10.15" | 15.01" | 16.87" | 19.49" | 15.08" | 11.30" | 13.64" | 12.08" | 17.15" | 11.57" | 11.00" | 18.28" | 15.26" | 17.57" | 22.59" | 12.33" | 19.88" | 23.40" | 19.49" | 19.05" | 14.27" | 15.77" | 17.17" | 13.27" | 13.41" | 13.12" | 13.42" | 16.98" | 22.25" | 14.42" | 15.28" | 11.72" | 19.65" | 12.50" | 24.05" | 11.55" | 12.71" | 11.74" | 15.98" | 16.91" | 13.24" | 18.62" | 14.84" | 19.38" | 13.80" | 23.58" | 14.70" | 16.02" | 12.90" | 19.33" | 18.81" | 15.75" | 10.64" | 9.11" | 26.06" | 15.43" | 20.81" | 13.16" | 22.51" | 29.19" | 18.84" | 15.07" | 20.47" | 11.28" | 13.96" | 13.33" | 11.44" | 13.74" | 14.75" | 21.44" | 11.98" | 24.32" | 18.38" | 18.84" | 24.87" | 18.72" | 14.92" | 12.98" | 12.49" | 15.83" | 14.61" | 20.75" | 22.92" | 10.04" | 12.64" | 11.92" | 17.33" | 19.78" | 12.83" | 11.26" |
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