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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 28.84" | 22.93" | 27.48" | 23.51" | 36.61" | 25.70" | 28.20" | 33.28" | 19.84" | 37.20" | 25.87" | 32.77" | 34.14" | 37.32" | 24.92" | 26.08" | 37.12" | 39.06" | 21.59" | 28.44" | 28.62" | 29.10" | 20.97" | 35.10" | 36.86" | 34.31" | 37.49" | 43.38" | 32.12" | 25.32" | 26.65" | 36.31" | 30.49" | 32.18" | 26.95" | 21.73" | 39.30" | 39.17" | 24.45" | 32.88" | 25.30" | 33.24" | 28.56" | 33.59" | 26.98" | 22.60" | 25.17" | 27.49" | 37.32" | 34.32" | 39.77" | 35.36" | 33.37" | 36.81" | 34.73" | 31.31" | 30.14" | 39.08" | 28.02" | 31.72" | 28.93" | 30.60" | 29.33" | 25.13" | 28.09" | 35.59" | 37.53" | 19.82" | 35.90" | 26.66" | 32.93" | 25.51" | 34.69" | 31.18" | 30.45" | 30.79" | 33.66" | 45.95" | 41.28" | 41.00" | 28.76" | 29.47" | 27.65" | 46.67" | 42.77" | 20.41" | 28.91" | 54.96" | 34.69" | 22.44" | 19.97" | 31.89" | 24.46" | 32.86" | 39.93" | 54.66" | 27.87" | 31.26" | 31.58" | 34.03" | 29.29" | 38.19" | 33.99" | 32.44" | 23.35" | 30.84" | 30.43" | 32.54" | 30.79" | 29.60" | 28.30" | 20.46" | 30.14" | 36.23" | 31.07" | 23.18" | 28.94" |
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