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 | 2013 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 16.93" | 21.03" | 19.88" | 16.87" | 18.77" | 26.53" | 17.42" | 18.26" | 23.62" | 13.21" | 26.43" | 15.16" | 16.88" | 22.82" | 22.25" | 14.33" | 20.25" | 20.65" | 25.50" | 16.40" | 16.68" | 15.10" | 22.49" | 17.23" | 22.59" | 24.74" | 24.47" | 27.38" | 26.82" | 20.01" | 15.80" | 19.57" | 21.82" | 19.20" | 24.00" | 13.54" | 14.25" | 23.87" | 24.85" | 16.62" | 22.67" | 18.45" | 23.18" | 22.12" | 24.21" | 20.72" | 13.60" | 16.76" | 16.72" | 27.91" | 24.57" | 26.30" | 26.83" | 25.58" | 27.90" | 25.74" | 25.85" | 16.77" | 26.03" | 14.76" | 22.69" | 22.99" | 20.07" | 20.09" | 18.39" | 18.74" | 28.62" | 22.75" | 14.64" | 28.19" | 18.56" | 24.81" | 12.99" | 19.00" | 20.12" | 18.63" | 20.56" | 19.63" | 31.34" | 28.20" | 25.53" | 19.01" | 23.03" | 14.48" | 33.97" | 32.13" | 13.97" | 21.94" | 30.99" | 19.34" | 17.75" | 9.20" | 21.00" | 18.42" | 20.38" | 28.43" | 34.76" | 18.73" | 20.76" | 23.17" | 24.03" | 20.73" | 26.17" | 26.50" | 22.61" | 17.18" | 23.03" | 19.77" | 19.53" | 19.76" | 20.40" | 20.01" | 11.88" | 19.81" | 19.34" | 16.28" | 19.69" | 19.85" | 27.84" |
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