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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 19.93" | 21.40" | 15.74" | 22.40" | 16.79" | 19.98" | 16.20" | 22.37" | 16.69" | 15.66" | 23.88" | 24.07" | 20.74" | 14.02" | 19.58" | 19.92" | 24.32" | 18.68" | 17.93" | 19.55" | 26.65" | 17.42" | 15.27" | 20.04" | 23.12" | 18.65" | 24.40" | 18.24" | 21.98" | 18.44" | 21.07" | 28.71" | 22.80" | 19.72" | 20.81" | 12.97" | 23.61" | 22.50" | 18.23" | 20.67" | 18.88" | 20.78" | 18.22" | 17.99" | 14.26" | 15.91" | 22.12" | 23.68" | 15.28" | 17.43" | 20.63" | 19.62" | 16.93" | 21.15" | 21.43" | 20.90" | 23.08" | 15.89" | 11.36" | 19.83" | 16.76" | 17.64" | 22.04" | 21.34" | 21.71" | 16.54" | 22.80" | 18.28" | 13.68" | 17.68" | 19.70" | 20.55" | 22.44" | 20.44" | 21.53" | 21.75" | 20.59" | 26.36" | 23.92" | 20.48" | 21.77" | 15.35" | 25.46" | 23.04" | 24.27" | 18.04" | 20.54" | 25.15" | 21.67" | 24.10" | 24.72" | 24.28" | 20.92" | 22.26" | 19.78" | 26.34" | 20.52" | 24.89" | 26.01" | 19.36" | 18.09" | 23.67" | 17.54" | 19.00" | 14.44" | 18.69" | 23.88" | 20.30" | 25.27" | 25.38" | 19.57" | 24.23" | 20.96" | 21.53" | 25.99" | 19.46" | 23.88" | 20.61" |
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