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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 35.61" | 28.14" | 33.32" | 32.52" | 36.72" | 32.54" | 24.93" | 42.91" | 25.24" | 34.64" | 36.73" | 37.16" | 35.05" | 44.89" | 26.40" | 21.01" | 30.99" | 28.36" | 30.73" | 29.90" | 45.29" | 24.65" | 24.01" | 34.39" | 35.03" | 37.99" | 30.65" | 32.57" | 44.34" | 25.55" | 31.01" | 40.06" | 37.83" | 39.11" | 32.74" | 32.88" | 33.71" | 31.11" | 30.35" | 28.45" | 32.56" | 26.48" | 34.19" | 29.28" | 23.72" | 35.37" | 44.57" | 39.31" | 33.68" | 39.39" | 39.47" | 30.78" | 35.76" | 34.62" | 33.61" | 36.60" | 34.42" | 24.22" | 28.62" | 25.62" | 27.55" | 25.02" | 47.66" | 30.42" | 41.97" | 36.41" | 36.08" | 32.01" | 23.83" | 32.43" | 29.91" | 23.39" | 37.09" | 39.22" | 30.92" | 28.73" | 32.34" | 39.87" | 40.28" | 42.42" | 31.09" | 29.39" | 32.10" | 29.69" | 33.12" | 26.56" | 37.19" | 37.00" | 34.25" | 37.69" | 36.01" | 46.98" | 39.56" | 31.14" | 41.02" | 34.52" | 39.96" | 45.12" | 36.60" | 36.63" | 35.72" | 40.55" | 44.89" | 33.57" | 37.36" | 38.20" | 30.70" | 33.75" | 32.36" | 39.88" | 26.62" | 33.79" | 45.59" | 35.19" | 39.94" | 29.12" | 31.05" | 23.62" |
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