Choose from the options below and click "Plot" to create a time series graph.
Data are available from January 1895 through May 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 | 2013 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 19.26" | 22.87" | 15.86" | 24.09" | 25.12" | 26.39" | 23.19" | 27.89" | 16.35" | 22.79" | 25.30" | 18.64" | 25.48" | 23.34" | 18.11" | 16.30" | 30.54" | 23.62" | 17.25" | 23.82" | 17.20" | 22.43" | 18.75" | 26.58" | 26.77" | 21.76" | 26.87" | 26.71" | 24.45" | 20.81" | 22.54" | 16.43" | 26.47" | 28.40" | 18.86" | 19.96" | 24.56" | 25.06" | 21.61" | 20.29" | 28.16" | 28.46" | 18.02" | 23.69" | 20.47" | 16.97" | 24.99" | 24.22" | 27.96" | 19.53" | 28.93" | 23.82" | 27.34" | 23.70" | 18.46" | 18.78" | 25.82" | 24.78" | 22.67" | 21.11" | 19.47" | 23.56" | 25.99" | 26.60" | 25.07" | 25.81" | 25.71" | 21.52" | 29.19" | 22.91" | 25.26" | 18.89" | 20.66" | 22.77" | 24.27" | 24.97" | 25.10" | 32.16" | 26.27" | 30.42" | 23.12" | 21.40" | 26.18" | 31.21" | 27.11" | 16.22" | 27.59" | 31.71" | 30.97" | 16.92" | 15.68" | 26.56" | 19.71" | 20.69" | 26.16" | 30.72" | 22.17" | 25.64" | 24.12" | 22.17" | 24.40" | 24.60" | 33.35" | 20.19" | 17.93" | 19.95" | 18.61" | 30.79" | 18.27" | 22.98" | 18.20" | 16.32" | 22.77" | 26.05" | 28.68" | 19.36" | 19.82" | 26.80" |
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