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.
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 23.37" | 27.28" | 26.83" | 26.49" | 33.65" | 25.94" | 24.61" | 37.14" | 24.48" | 37.03" | 28.35" | 28.77" | 34.35" | 22.23" | 22.49" | 22.50" | 25.30" | 23.30" | 37.00" | 33.68" | 27.04" | 18.37" | 16.95" | 38.26" | 34.80" | 33.43" | 29.07" | 26.43" | 33.34" | 16.45" | 34.41" | 28.98" | 24.76" | 29.74" | 23.95" | 30.46" | 29.11" | 28.05" | 23.11" | 30.14" | 28.23" | 26.53" | 30.73" | 21.32" | 25.20" | 41.06" | 31.14" | 27.61" | 27.95" | 32.60" | 29.35" | 29.69" | 23.13" | 27.88" | 30.80" | 20.35" | 21.79" | 20.65" | 22.02" | 21.71" | 17.72" | 28.63" | 32.24" | 30.22" | 28.72" | 34.49" | 23.82" | 22.43" | 20.51" | 27.46" | 27.06" | 22.98" | 35.47" | 26.99" | 27.67" | 20.22" | 32.09" | 35.05" | 25.58" | 38.50" | 26.77" | 28.00" | 20.74" | 34.43" | 22.22" | 31.62" | 30.33" | 25.17" | 21.66" | 32.13" | 28.45" | 38.06" | 23.68" | 27.06" | 27.40" | 31.41" | 41.89" | 28.32" | 24.94" | 31.33" | 20.29" | 37.02" | 24.01" | 33.85" | 21.48" | 27.76" | 29.65" | 29.55" | 33.73" | 31.01" | 20.78" | 40.78" | 22.93" | 25.31" | 35.36" | 15.42" | 24.98" |
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