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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 29.38" | 25.19" | 25.71" | 28.41" | 24.49" | 29.28" | 36.12" | 21.33" | 28.79" | 23.00" | 28.31" | 32.89" | 26.57" | 28.77" | 31.63" | 27.25" | 23.76" | 32.52" | 26.55" | 20.13" | 24.46" | 28.73" | 27.07" | 24.21" | 31.47" | 32.31" | 23.16" | 31.73" | 30.86" | 27.54" | 17.66" | 26.05" | 23.44" | 36.17" | 31.58" | 21.90" | 25.18" | 26.59" | 27.36" | 30.69" | 28.47" | 27.40" | 29.98" | 29.05" | 31.54" | 28.96" | 26.93" | 30.19" | 29.20" | 30.98" | 28.31" | 30.77" | 30.37" | 31.12" | 32.51" | 27.64" | 25.11" | 27.18" | 27.51" | 20.69" | 27.11" | 24.34" | 28.31" | 30.86" | 31.76" | 28.55" | 31.47" | 27.24" | 24.99" | 32.18" | 28.54" | 26.43" | 27.20" | 25.21" | 30.45" | 28.99" | 30.54" | 26.98" | 33.69" | 29.22" | 33.22" | 27.83" | 24.31" | 28.85" | 29.94" | 28.92" | 24.51" | 29.40" | 28.40" | 31.28" | 25.81" | 22.03" | 24.41" | 23.19" | 33.15" | 24.37" | 35.70" | 28.90" | 23.54" | 32.63" | 28.11" | 29.16" | 27.07" | 26.59" | 23.91" | 23.23" | 29.92" | 24.96" | 39.86" | 26.91" | 34.20" | 22.04" | 19.65" | 28.06" | 31.52" | 25.68" | 24.80" | 28.97" |
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