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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 29.08" | 29.98" | 27.46" | 28.20" | 27.91" | 26.35" | 26.41" | 26.42" | 29.37" | 22.12" | 25.18" | 31.05" | 24.93" | 25.67" | 28.27" | 25.70" | 29.20" | 27.19" | 26.78" | 24.17" | 31.69" | 22.58" | 25.55" | 23.68" | 22.52" | 30.59" | 24.12" | 24.46" | 17.93" | 28.36" | 21.11" | 30.30" | 28.79" | 20.46" | 21.47" | 20.71" | 28.74" | 26.43" | 26.61" | 26.79" | 25.01" | 23.21" | 29.57" | 21.48" | 25.64" | 27.86" | 27.16" | 30.23" | 19.90" | 25.37" | 29.53" | 27.19" | 32.56" | 25.16" | 29.95" | 30.95" | 27.43" | 27.43" | 28.96" | 22.89" | 34.67" | 26.79" | 28.45" | 27.60" | 27.75" | 28.73" | 25.61" | 27.96" | 27.90" | 30.56" | 21.72" | 27.58" | 27.91" | 29.36" | 26.83" | 32.21" | 32.21" | 20.74" | 35.84" | 27.77" | 29.94" | 16.29" | 30.83" | 22.25" | 27.54" | 27.10" | 33.72" | 35.11" | 31.62" | 22.65" | 27.13" | 25.05" | 21.36" | 26.33" | 25.42" | 26.57" | 21.25" | 29.39" | 18.52" | 31.96" | 33.99" | 37.23" | 30.13" | 32.24" | 25.36" | 18.82" | 25.67" | 24.29" | 27.02" | 24.12" | 30.59" | 26.36" | 25.57" | 25.02" | 27.45" | 32.08" | 26.94" |
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