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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 17.62" | 26.43" | 27.15" | 26.14" | 23.31" | 22.94" | 17.24" | 22.45" | 24.88" | 23.80" | 24.22" | 19.96" | 23.85" | 28.01" | 29.74" | 22.47" | 19.25" | 26.81" | 21.50" | 17.29" | 22.65" | 20.98" | 24.20" | 19.72" | 22.17" | 22.90" | 21.80" | 25.79" | 23.25" | 23.14" | 18.57" | 18.85" | 29.52" | 25.34" | 28.04" | 14.36" | 19.34" | 19.24" | 24.34" | 15.88" | 28.30" | 15.30" | 20.76" | 27.43" | 26.83" | 20.88" | 16.68" | 23.45" | 25.13" | 23.34" | 30.41" | 22.53" | 22.43" | 25.87" | 23.13" | 25.92" | 25.38" | 20.69" | 21.05" | 18.23" | 24.58" | 25.03" | 27.14" | 26.17" | 20.37" | 20.89" | 28.31" | 22.33" | 21.54" | 24.39" | 22.43" | 19.49" | 24.19" | 21.79" | 22.02" | 23.67" | 20.51" | 22.89" | 30.20" | 23.50" | 25.28" | 21.14" | 21.45" | 21.18" | 26.36" | 20.44" | 27.75" | 22.30" | 23.79" | 24.70" | 22.80" | 20.85" | 18.96" | 16.06" | 26.68" | 28.50" | 21.32" | 21.97" | 24.93" | 24.72" | 24.55" | 27.06" | 25.13" | 30.32" | 21.14" | 24.31" | 23.27" | 25.45" | 27.08" | 25.71" | 18.54" | 21.70" | 19.46" | 31.45" | 27.02" | 25.95" | 30.90" | 16.57" |
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