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 | 2013 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 22.51" | 35.61" | 27.42" | 27.37" | 30.53" | 35.84" | 25.41" | 33.60" | 36.11" | 31.61" | 37.17" | 33.04" | 30.78" | 28.94" | 29.97" | 22.97" | 35.80" | 35.49" | 31.41" | 33.54" | 34.14" | 33.15" | 27.43" | 29.51" | 34.71" | 28.49" | 33.22" | 30.23" | 26.26" | 31.81" | 29.45" | 34.81" | 31.08" | 35.27" | 26.67" | 24.40" | 31.12" | 25.65" | 25.19" | 32.40" | 31.50" | 25.85" | 29.02" | 39.98" | 25.35" | 33.08" | 34.78" | 36.35" | 30.10" | 29.78" | 35.60" | 28.11" | 30.89" | 24.86" | 28.89" | 30.83" | 37.09" | 28.95" | 28.12" | 35.89" | 27.78" | 26.01" | 27.59" | 26.90" | 35.87" | 35.37" | 31.33" | 27.52" | 23.31" | 30.10" | 38.85" | 26.32" | 28.36" | 39.35" | 26.80" | 35.39" | 30.51" | 37.46" | 33.87" | 30.08" | 33.88" | 20.01" | 31.96" | 40.13" | 28.64" | 33.85" | 31.81" | 36.54" | 33.58" | 36.44" | 36.02" | 33.67" | 29.82" | 25.65" | 25.96" | 35.78" | 38.07" | 30.76" | 35.74" | 31.18" | 34.21" | 32.99" | 30.81" | 29.65" | 33.84" | 34.37" | 36.63" | 33.42" | 31.04" | 34.27" | 29.28" | 30.88" | 33.71" | 33.31" | 28.63" | 41.76" | 29.66" | 29.94" |
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