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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 29.26" | 29.71" | 24.41" | 28.18" | 28.40" | 24.40" | 24.47" | 27.31" | 33.49" | 23.54" | 25.72" | 30.23" | 26.24" | 26.26" | 28.87" | 26.29" | 30.52" | 27.50" | 29.36" | 19.79" | 31.38" | 21.47" | 25.24" | 23.54" | 23.77" | 28.53" | 24.50" | 24.74" | 18.76" | 26.68" | 21.21" | 32.04" | 24.46" | 18.93" | 22.24" | 20.32" | 25.74" | 28.27" | 23.03" | 24.63" | 23.07" | 26.10" | 31.47" | 19.77" | 28.84" | 26.16" | 25.84" | 34.45" | 18.08" | 25.32" | 30.54" | 28.45" | 28.90" | 24.51" | 32.48" | 29.45" | 25.05" | 30.98" | 29.80" | 23.61" | 37.88" | 25.02" | 30.19" | 27.55" | 23.49" | 30.12" | 27.15" | 26.36" | 24.31" | 31.56" | 23.82" | 28.12" | 25.06" | 30.75" | 28.13" | 32.61" | 30.37" | 21.55" | 34.05" | 30.18" | 25.46" | 16.91" | 30.31" | 25.27" | 25.32" | 27.44" | 36.27" | 33.76" | 33.51" | 23.73" | 26.43" | 20.89" | 22.49" | 28.05" | 23.07" | 22.31" | 21.53" | 29.55" | 19.74" | 31.62" | 36.09" | 37.21" | 28.51" | 31.76" | 26.88" | 16.36" | 22.69" | 26.10" | 28.86" | 21.92" | 30.34" | 27.19" | 22.97" | 24.52" | 28.31" | 28.97" | 27.71" |
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