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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 16.20" | 22.15" | 14.71" | 13.75" | 16.17" | 21.38" | 20.93" | 13.82" | 18.38" | 15.35" | 18.64" | 24.47" | 18.92" | 15.61" | 22.14" | 20.47" | 15.50" | 23.72" | 14.04" | 11.91" | 18.58" | 18.66" | 14.58" | 13.29" | 22.67" | 18.38" | 17.65" | 20.63" | 25.16" | 19.37" | 19.02" | 20.32" | 15.43" | 18.10" | 21.27" | 19.27" | 11.47" | 18.35" | 17.65" | 23.90" | 17.90" | 19.50" | 16.34" | 19.94" | 22.12" | 16.96" | 19.12" | 19.21" | 20.66" | 17.32" | 20.88" | 23.97" | 21.89" | 17.23" | 18.59" | 15.39" | 14.88" | 13.15" | 17.03" | 17.48" | 16.94" | 15.45" | 22.45" | 18.18" | 23.24" | 20.08" | 15.66" | 16.75" | 18.26" | 17.39" | 19.65" | 21.47" | 18.20" | 23.99" | 20.06" | 16.59" | 16.34" | 17.92" | 17.49" | 22.58" | 22.20" | 21.11" | 13.76" | 21.64" | 18.70" | 17.09" | 13.80" | 24.16" | 15.78" | 19.73" | 17.59" | 16.14" | 16.15" | 14.93" | 19.19" | 15.72" | 25.77" | 18.86" | 12.71" | 20.80" | 20.63" | 16.72" | 18.98" | 12.02" | 19.34" | 13.64" | 20.77" | 20.60" | 22.97" | 17.62" | 23.32" | 15.00" | 15.32" | 16.98" | 22.63" | 15.86" | 13.92" | 23.93" |
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