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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 36.57" | 28.89" | 32.61" | 35.53" | 32.29" | 40.37" | 26.48" | 42.14" | 29.44" | 34.88" | 42.53" | 36.20" | 37.99" | 36.60" | 31.99" | 27.19" | 34.06" | 34.92" | 35.31" | 38.25" | 37.98" | 28.82" | 23.06" | 35.57" | 43.65" | 37.44" | 33.42" | 37.90" | 43.52" | 26.14" | 31.19" | 38.65" | 36.40" | 37.12" | 36.09" | 33.20" | 37.23" | 34.60" | 31.81" | 29.81" | 37.85" | 32.31" | 33.31" | 33.80" | 28.08" | 38.99" | 42.06" | 36.30" | 33.33" | 40.07" | 41.32" | 37.94" | 34.23" | 35.27" | 39.66" | 34.34" | 32.76" | 27.69" | 31.55" | 26.38" | 30.55" | 24.08" | 46.29" | 37.11" | 38.64" | 36.37" | 39.33" | 30.09" | 26.52" | 34.46" | 33.65" | 28.44" | 36.19" | 38.42" | 34.33" | 32.15" | 34.91" | 36.98" | 46.40" | 40.61" | 34.61" | 34.45" | 34.49" | 34.30" | 38.50" | 30.98" | 37.25" | 38.36" | 35.35" | 37.28" | 35.77" | 42.68" | 35.52" | 32.71" | 38.09" | 39.19" | 45.48" | 39.87" | 37.07" | 36.47" | 34.48" | 39.11" | 42.10" | 34.55" | 30.46" | 37.30" | 36.01" | 38.99" | 34.34" | 45.01" | 28.38" | 34.68" | 39.41" | 35.30" | 44.25" | 30.49" | 29.02" | 33.04" |
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