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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 19.70" | 26.81" | 25.43" | 28.29" | 22.70" | 21.87" | 19.46" | 24.29" | 23.45" | 25.27" | 26.20" | 22.53" | 25.94" | 26.03" | 26.47" | 21.55" | 20.64" | 28.19" | 21.19" | 18.59" | 26.46" | 22.92" | 25.78" | 21.18" | 23.91" | 25.72" | 24.51" | 25.80" | 25.12" | 24.36" | 18.20" | 22.04" | 30.64" | 27.07" | 27.86" | 13.75" | 21.74" | 20.90" | 25.28" | 18.74" | 29.78" | 15.50" | 22.06" | 28.01" | 25.07" | 22.35" | 19.14" | 25.15" | 26.15" | 23.99" | 29.01" | 23.35" | 24.92" | 24.42" | 23.57" | 26.24" | 24.47" | 22.25" | 20.32" | 20.79" | 23.16" | 23.27" | 26.07" | 28.23" | 20.95" | 21.30" | 28.06" | 20.38" | 23.60" | 25.53" | 23.54" | 20.28" | 24.94" | 24.14" | 23.20" | 25.61" | 19.59" | 23.92" | 30.74" | 26.67" | 26.36" | 20.92" | 25.65" | 24.77" | 28.46" | 23.48" | 28.47" | 24.93" | 24.43" | 24.42" | 24.75" | 20.33" | 20.60" | 16.65" | 26.26" | 26.97" | 21.42" | 23.07" | 26.26" | 25.32" | 26.60" | 27.87" | 25.80" | 30.14" | 20.79" | 24.42" | 23.16" | 26.90" | 26.89" | 28.45" | 21.18" | 24.33" | 20.58" | 29.37" | 28.66" | 26.79" | 29.94" | 17.98" |
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