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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 20.97" | 26.32" | 27.00" | 28.01" | 21.11" | 24.14" | 28.86" | 28.27" | 29.88" | 26.60" | 25.31" | 23.78" | 19.69" | 25.31" | 25.87" | 24.87" | 22.48" | 24.06" | 24.53" | 26.36" | 27.11" | 25.80" | 25.70" | 23.65" | 26.39" | 24.66" | 22.47" | 29.76" | 21.40" | 24.93" | 25.34" | 23.93" | 24.61" | 28.50" | 28.19" | 22.85" | 25.04" | 26.68" | 24.87" | 20.76" | 26.14" | 25.23" | 30.25" | 26.13" | 22.82" | 26.66" | 20.11" | 25.91" | 27.97" | 23.22" | 29.66" | 23.60" | 32.21" | 27.65" | 23.29" | 26.94" | 27.85" | 26.41" | 26.64" | 27.65" | 24.62" | 27.45" | 21.63" | 27.38" | 24.33" | 26.05" | 28.47" | 23.01" | 22.34" | 22.99" | 20.48" | 21.64" | 24.92" | 23.42" | 24.73" | 23.02" | 26.74" | 32.71" | 27.74" | 27.56" | 28.15" | 33.46" | 27.29" | 25.01" | 27.63" | 23.31" | 24.64" | 25.43" | 28.25" | 30.01" | 22.01" | 29.57" | 24.80" | 22.91" | 27.81" | 31.59" | 23.45" | 27.67" | 25.43" | 30.57" | 19.82" | 31.60" | 24.92" | 31.79" | 23.48" | 33.92" | 22.42" | 27.12" | 28.36" | 30.03" | 26.59" | 31.11" | 27.04" | 31.95" | 29.89" | 27.55" | 36.67" | 23.37" |
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