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 | 2013 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 24.28" | 22.63" | 10.26" | 10.53" | 30.58" | 28.08" | 14.30" | 24.54" | 17.74" | 26.00" | 19.48" | 32.16" | 25.23" | 44.27" | 33.47" | 34.98" | 14.88" | 24.17" | 48.43" | 31.52" | 43.30" | 23.83" | 8.12" | 18.76" | 10.57" | 42.92" | 25.47" | 29.94" | 8.10" | 21.08" | 17.04" | 30.28" | 22.08" | 15.99" | 21.50" | 10.02" | 24.21" | 13.07" | 15.95" | 22.54" | 18.37" | 12.96" | 26.80" | 11.49" | 20.41" | 30.39" | 26.78" | 24.16" | 11.94" | 17.23" | 25.44" | 12.76" | 15.88" | 12.97" | 16.15" | 32.75" | 34.62" | 27.07" | 17.65" | 18.63" | 37.90" | 11.13" | 21.96" | 15.82" | 12.73" | 15.29" | 14.10" | 25.30" | 19.44" | 35.37" | 21.32" | 29.32" | 18.83" | 33.80" | 18.60" | 28.03" | 15.37" | 28.41" | 32.58" | 12.93" | 9.88" | 7.94" | 29.17" | 14.49" | 25.44" | 15.79" | 35.60" | 32.45" | 31.17" | 18.25" | 21.10" | 11.37" | 20.54" | 16.50" | 17.64" | 5.29" | 11.06" | 30.62" | 14.51" | 35.61" | 21.68" | 39.34" | 29.29" | 20.02" | 17.04" | 12.86" | 24.05" | 24.24" | 20.10" | 22.42" | 29.79" | 10.18" | 20.43" | 11.32" | 20.63" | 22.35" | 12.32" | 20.26" |
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