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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 17.48" | 28.78" | 27.96" | 31.39" | 24.45" | 23.67" | 22.77" | 23.70" | 28.01" | 28.64" | 27.87" | 24.92" | 31.89" | 29.30" | 33.48" | 23.80" | 26.01" | 28.99" | 33.93" | 25.04" | 27.37" | 27.44" | 27.86" | 24.31" | 25.97" | 27.81" | 27.31" | 27.39" | 25.77" | 27.37" | 21.05" | 26.77" | 29.42" | 26.53" | 31.41" | 19.87" | 25.15" | 23.98" | 27.82" | 18.84" | 30.19" | 21.15" | 34.35" | 29.99" | 29.80" | 28.34" | 21.59" | 26.03" | 29.56" | 24.77" | 30.68" | 25.66" | 31.72" | 29.30" | 28.53" | 33.66" | 26.73" | 27.07" | 23.24" | 25.39" | 25.55" | 32.41" | 26.36" | 30.45" | 27.98" | 23.49" | 30.32" | 22.22" | 22.86" | 29.18" | 24.89" | 24.19" | 23.53" | 27.23" | 26.17" | 25.42" | 22.37" | 26.59" | 29.32" | 28.76" | 29.90" | 25.87" | 25.71" | 26.55" | 31.90" | 31.89" | 28.80" | 25.68" | 24.27" | 24.50" | 25.05" | 24.15" | 22.99" | 20.04" | 32.48" | 32.89" | 22.14" | 28.55" | 25.45" | 27.35" | 28.50" | 32.11" | 30.06" | 32.08" | 24.31" | 29.86" | 24.29" | 26.23" | 32.28" | 32.17" | 29.55" | 28.12" | 28.64" | 33.84" | 26.11" | 26.80" | 35.91" | 21.60" |
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