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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 17.80" | 22.80" | 18.75" | 18.86" | 16.99" | 21.72" | 20.37" | 25.77" | 24.74" | 20.97" | 28.83" | 21.87" | 18.70" | 22.90" | 19.47" | 15.35" | 16.78" | 19.13" | 17.53" | 18.54" | 33.27" | 16.64" | 19.26" | 17.28" | 20.37" | 20.43" | 18.80" | 14.01" | 25.49" | 17.88" | 17.90" | 17.85" | 22.51" | 17.97" | 18.79" | 21.14" | 15.09" | 18.97" | 18.51" | 12.00" | 20.48" | 13.20" | 15.71" | 21.08" | 14.97" | 14.09" | 20.87" | 23.23" | 15.76" | 24.88" | 21.61" | 18.96" | 19.67" | 18.14" | 22.93" | 20.96" | 27.56" | 18.01" | 16.88" | 17.39" | 15.87" | 13.58" | 23.41" | 22.15" | 20.51" | 21.19" | 19.96" | 24.24" | 19.73" | 19.24" | 26.79" | 17.51" | 20.18" | 18.15" | 17.98" | 16.30" | 19.65" | 19.39" | 24.78" | 13.69" | 17.55" | 16.38" | 26.19" | 20.09" | 20.87" | 15.55" | 20.08" | 22.44" | 21.12" | 21.35" | 19.94" | 23.33" | 22.84" | 19.28" | 15.81" | 18.72" | 18.63" | 22.29" | 28.72" | 17.58" | 22.73" | 22.73" | 18.07" | 20.97" | 22.76" | 16.28" | 22.21" | 12.96" | 17.93" | 20.48" | 21.19" | 18.45" | 24.71" | 22.38" | 20.26" | 25.47" | 22.66" | 11.24" |
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