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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 11.98" | 23.36" | 24.65" | 23.25" | 18.36" | 22.22" | 15.94" | 21.29" | 22.00" | 23.17" | 22.41" | 17.45" | 21.43" | 25.70" | 28.91" | 18.53" | 17.68" | 24.37" | 21.82" | 15.64" | 19.77" | 19.64" | 22.39" | 19.14" | 19.70" | 21.09" | 19.62" | 23.67" | 20.49" | 20.60" | 16.64" | 18.68" | 25.98" | 21.03" | 25.82" | 12.99" | 17.37" | 16.79" | 23.35" | 12.40" | 23.49" | 13.43" | 20.24" | 27.84" | 25.56" | 18.81" | 15.03" | 23.88" | 25.70" | 21.64" | 29.83" | 20.59" | 22.93" | 24.23" | 21.11" | 26.27" | 22.47" | 22.40" | 20.15" | 17.85" | 22.97" | 22.94" | 27.81" | 25.34" | 20.79" | 20.84" | 27.25" | 20.36" | 21.33" | 24.74" | 19.93" | 17.40" | 19.64" | 22.74" | 20.90" | 22.51" | 20.16" | 21.34" | 26.70" | 21.48" | 23.47" | 20.62" | 20.41" | 19.85" | 25.57" | 21.33" | 26.41" | 21.64" | 21.49" | 21.12" | 21.80" | 22.86" | 19.14" | 15.63" | 25.76" | 28.41" | 18.02" | 21.95" | 23.87" | 18.86" | 22.83" | 28.85" | 24.59" | 29.51" | 20.55" | 23.50" | 20.80" | 25.53" | 26.48" | 23.30" | 17.75" | 25.73" | 18.87" | 31.65" | 26.74" | 25.24" | 31.55" | 12.79" |
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