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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 31.78" | 24.98" | 26.03" | 30.00" | 28.79" | 25.03" | 42.87" | 20.05" | 29.42" | 25.48" | 30.95" | 36.63" | 27.88" | 35.41" | 32.49" | 29.88" | 21.69" | 28.25" | 28.25" | 20.94" | 25.61" | 31.85" | 30.45" | 25.84" | 30.23" | 31.89" | 23.25" | 34.35" | 26.68" | 28.30" | 17.46" | 22.26" | 24.77" | 33.04" | 31.36" | 19.25" | 28.62" | 21.77" | 25.27" | 30.91" | 27.30" | 28.63" | 27.99" | 28.88" | 29.66" | 27.84" | 25.89" | 28.56" | 28.72" | 27.31" | 27.14" | 29.51" | 25.22" | 25.86" | 34.36" | 28.45" | 24.34" | 28.78" | 23.68" | 22.07" | 29.67" | 25.10" | 24.42" | 30.05" | 30.71" | 28.00" | 31.73" | 28.86" | 23.13" | 27.54" | 30.44" | 24.94" | 26.76" | 22.81" | 29.98" | 25.83" | 29.38" | 26.15" | 31.01" | 30.66" | 29.30" | 24.05" | 23.84" | 28.69" | 28.04" | 24.84" | 25.44" | 25.19" | 25.20" | 31.96" | 23.67" | 22.20" | 23.48" | 22.33" | 34.95" | 25.08" | 30.71" | 28.97" | 23.90" | 28.59" | 27.86" | 28.40" | 23.46" | 28.41" | 22.55" | 26.49" | 25.92" | 22.16" | 40.68" | 27.62" | 28.02" | 26.05" | 18.23" | 25.52" | 27.66" | 22.89" | 27.02" | 28.34" |
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