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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 24.04" | 29.43" | 28.80" | 21.85" | 25.88" | 23.86" | 28.92" | 26.37" | 20.37" | 18.98" | 23.22" | 19.51" | 24.00" | 26.42" | 21.73" | 16.62" | 24.86" | 24.20" | 20.47" | 17.20" | 24.50" | 21.14" | 20.34" | 22.13" | 23.03" | 22.72" | 29.07" | 22.12" | 22.91" | 24.10" | 20.56" | 16.84" | 28.05" | 28.77" | 25.64" | 17.89" | 18.45" | 17.91" | 19.76" | 20.58" | 22.74" | 24.30" | 17.76" | 23.24" | 22.60" | 14.68" | 22.24" | 22.55" | 17.47" | 24.69" | 17.82" | 26.55" | 19.65" | 19.22" | 19.28" | 22.78" | 24.58" | 24.36" | 27.09" | 20.13" | 19.11" | 17.29" | 22.42" | 17.56" | 22.35" | 18.33" | 17.72" | 17.40" | 17.96" | 13.57" | 16.81" | 19.22" | 21.51" | 22.97" | 21.39" | 19.95" | 23.11" | 30.67" | 28.85" | 19.02" | 26.95" | 19.21" | 23.90" | 23.54" | 15.14" | 20.69" | 22.35" | 27.01" | 27.99" | 20.01" | 23.23" | 18.92" | 16.40" | 20.49" | 24.39" | 22.03" | 19.09" | 21.79" | 24.61" | 16.09" | 27.59" | 23.96" | 28.17" | 19.10" | 27.20" | 21.29" | 27.70" | 18.91" | 22.60" | 24.68" | 29.40" | 24.34" | 28.17" | 25.14" | 24.60" | 31.14" | 21.33" |
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