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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 18.86" | 17.01" | 21.26" | 12.40" | 18.57" | 24.24" | 18.84" | 19.13" | 20.83" | 12.56" | 18.25" | 15.09" | 15.20" | 19.40" | 22.71" | 12.51" | 16.16" | 27.60" | 21.15" | 12.46" | 13.17" | 12.76" | 22.12" | 16.54" | 21.03" | 24.60" | 18.06" | 24.32" | 20.11" | 18.24" | 15.68" | 18.99" | 13.79" | 19.54" | 30.90" | 12.15" | 14.00" | 20.20" | 22.58" | 18.05" | 20.21" | 29.80" | 24.89" | 20.83" | 23.50" | 20.11" | 12.85" | 17.75" | 20.69" | 31.39" | 23.72" | 25.90" | 26.21" | 24.31" | 24.45" | 18.79" | 20.82" | 17.77" | 24.06" | 13.98" | 20.33" | 21.87" | 19.39" | 18.56" | 19.63" | 21.29" | 30.07" | 24.15" | 19.20" | 31.15" | 19.88" | 22.97" | 12.78" | 15.04" | 18.23" | 19.34" | 25.08" | 20.70" | 28.92" | 23.29" | 29.72" | 19.40" | 22.84" | 17.16" | 32.11" | 29.69" | 17.17" | 25.01" | 29.38" | 18.48" | 15.99" | 11.28" | 19.58" | 17.47" | 19.79" | 29.96" | 26.82" | 19.30" | 20.00" | 22.31" | 22.12" | 25.11" | 22.88" | 27.67" | 18.94" | 17.09" | 23.41" | 16.13" | 20.35" | 16.21" | 22.07" | 16.47" | 12.91" | 19.17" | 22.14" | 18.62" | 20.68" | 17.30" | 25.42" |
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