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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 16.92" | 16.11" | 10.36" | 12.16" | 15.83" | 18.02" | 15.90" | 15.95" | 17.85" | 19.66" | 22.82" | 25.06" | 14.65" | 22.86" | 18.39" | 22.22" | 13.85" | 15.86" | 26.24" | 21.95" | 22.79" | 16.63" | 12.74" | 15.92" | 13.50" | 21.24" | 18.92" | 16.77" | 8.67" | 17.63" | 15.03" | 19.59" | 14.70" | 11.76" | 14.53" | 11.40" | 17.55" | 11.35" | 10.98" | 17.42" | 16.25" | 17.04" | 23.06" | 12.01" | 19.24" | 24.69" | 19.04" | 18.62" | 14.52" | 16.67" | 16.40" | 13.13" | 13.81" | 13.13" | 12.96" | 16.83" | 22.65" | 14.86" | 14.29" | 12.24" | 19.95" | 13.54" | 22.79" | 10.89" | 12.82" | 12.07" | 16.16" | 17.53" | 13.08" | 18.04" | 14.10" | 20.84" | 13.25" | 23.75" | 14.53" | 16.84" | 11.65" | 19.07" | 18.86" | 15.89" | 10.83" | 10.60" | 23.87" | 16.27" | 21.61" | 12.19" | 22.76" | 28.67" | 19.99" | 13.95" | 20.43" | 12.22" | 13.48" | 13.23" | 12.60" | 12.89" | 14.49" | 22.22" | 11.19" | 26.27" | 17.21" | 18.40" | 27.36" | 15.85" | 14.79" | 12.50" | 12.55" | 16.32" | 14.12" | 22.86" | 21.18" | 9.66" | 12.85" | 13.14" | 16.41" | 20.87" | 11.33" |
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