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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 25.05" | 36.42" | 25.21" | 30.66" | 26.92" | 34.45" | 23.34" | 41.47" | 34.85" | 26.95" | 35.84" | 29.99" | 30.51" | 34.34" | 37.62" | 19.51" | 28.63" | 27.78" | 28.74" | 30.47" | 38.71" | 27.70" | 27.06" | 31.30" | 35.99" | 30.41" | 30.85" | 29.51" | 28.58" | 29.46" | 26.79" | 31.91" | 28.13" | 34.90" | 29.64" | 25.34" | 32.96" | 30.87" | 23.70" | 26.24" | 31.83" | 24.45" | 26.72" | 35.53" | 24.16" | 29.42" | 34.34" | 30.99" | 30.55" | 35.70" | 32.41" | 34.27" | 33.35" | 26.61" | 26.93" | 28.28" | 41.35" | 28.58" | 24.61" | 33.61" | 22.21" | 23.56" | 30.36" | 25.34" | 36.16" | 33.29" | 35.85" | 30.89" | 26.55" | 30.53" | 38.25" | 24.20" | 29.44" | 30.59" | 33.54" | 32.48" | 27.51" | 35.33" | 40.82" | 31.07" | 29.73" | 23.36" | 35.75" | 33.05" | 33.86" | 28.23" | 31.27" | 38.41" | 35.41" | 35.10" | 30.25" | 39.47" | 31.42" | 20.87" | 24.29" | 37.66" | 36.51" | 34.66" | 47.42" | 28.79" | 32.08" | 32.98" | 28.58" | 39.87" | 32.14" | 28.41" | 34.16" | 29.47" | 27.75" | 35.08" | 29.37" | 30.42" | 40.42" | 41.27" | 36.90" | 43.49" | 30.03" | 23.99" |
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