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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 23.59" | 21.29" | 19.77" | 22.41" | 26.79" | 28.29" | 15.45" | 34.72" | 25.56" | 21.82" | 27.40" | 22.78" | 26.06" | 17.52" | 21.66" | 14.10" | 14.24" | 20.66" | 35.02" | 27.12" | 17.89" | 15.85" | 8.67" | 24.74" | 42.51" | 27.80" | 21.46" | 20.50" | 29.89" | 13.54" | 26.08" | 22.24" | 18.55" | 23.19" | 17.41" | 26.71" | 21.59" | 20.13" | 21.99" | 18.51" | 25.42" | 28.23" | 21.06" | 14.64" | 15.40" | 34.17" | 23.90" | 29.79" | 23.92" | 21.25" | 24.03" | 31.27" | 16.00" | 16.29" | 24.22" | 12.23" | 18.21" | 19.36" | 20.52" | 11.70" | 15.55" | 10.52" | 29.51" | 24.35" | 24.77" | 37.38" | 26.80" | 19.21" | 16.66" | 21.38" | 22.82" | 14.53" | 32.89" | 26.96" | 20.69" | 16.74" | 31.78" | 23.75" | 38.46" | 26.97" | 21.35" | 33.61" | 16.21" | 29.50" | 23.88" | 19.62" | 31.02" | 16.14" | 25.88" | 22.99" | 25.20" | 29.08" | 24.64" | 17.02" | 15.26" | 21.72" | 34.24" | 21.71" | 18.02" | 27.31" | 17.86" | 23.04" | 28.08" | 35.70" | 16.66" | 24.97" | 28.17" | 39.59" | 26.33" | 31.99" | 13.11" | 27.58" | 30.15" | 12.43" | 27.07" | 25.40" | 14.41" | 16.80" |
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