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.
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 35.12" | 32.35" | 31.24" | 33.70" | 38.28" | 35.22" | 28.54" | 41.18" | 29.34" | 40.84" | 36.22" | 39.42" | 38.49" | 33.14" | 30.94" | 28.14" | 35.91" | 32.34" | 38.90" | 37.04" | 35.84" | 28.01" | 24.15" | 38.59" | 42.08" | 37.32" | 38.56" | 35.26" | 40.40" | 22.59" | 36.31" | 39.08" | 34.36" | 40.40" | 32.89" | 32.03" | 36.15" | 37.30" | 30.37" | 34.82" | 32.49" | 31.70" | 36.69" | 30.87" | 29.40" | 41.28" | 41.09" | 35.69" | 36.44" | 38.58" | 41.45" | 38.38" | 30.80" | 37.77" | 37.89" | 33.42" | 34.63" | 29.01" | 28.54" | 27.20" | 27.56" | 34.53" | 40.12" | 35.40" | 36.52" | 38.57" | 36.85" | 29.74" | 30.08" | 32.91" | 34.07" | 28.71" | 38.81" | 37.92" | 33.05" | 28.75" | 36.48" | 43.27" | 41.49" | 43.16" | 33.64" | 34.28" | 32.24" | 38.78" | 37.95" | 28.84" | 37.23" | 39.58" | 32.64" | 37.76" | 35.30" | 43.42" | 33.70" | 34.44" | 42.20" | 38.80" | 41.74" | 41.65" | 35.78" | 39.66" | 28.02" | 44.66" | 37.04" | 38.59" | 29.05" | 36.73" | 35.86" | 36.81" | 38.01" | 41.50" | 29.25" | 38.38" | 38.52" | 36.19" | 41.07" | 29.01" | 31.13" |
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