Choose from the options below and click "Plot" to create a time series graph.
Data are available from January 1895 through May 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 22.36" | 22.35" | 21.59" | 21.20" | 22.09" | 19.72" | 20.65" | 24.23" | 20.16" | 23.20" | 22.93" | 23.33" | 23.97" | 22.45" | 20.15" | 19.13" | 23.57" | 20.57" | 21.26" | 23.47" | 23.41" | 19.77" | 17.75" | 23.22" | 22.06" | 21.84" | 23.53" | 22.77" | 20.08" | 18.41" | 19.73" | 23.80" | 22.58" | 22.26" | 18.98" | 18.08" | 23.09" | 21.21" | 17.13" | 23.33" | 19.21" | 22.15" | 23.86" | 20.74" | 20.07" | 23.66" | 21.88" | 22.16" | 21.85" | 24.18" | 22.47" | 22.15" | 22.92" | 24.69" | 22.40" | 21.54" | 21.83" | 22.54" | 19.22" | 19.65" | 19.55" | 23.13" | 24.61" | 20.35" | 20.66" | 21.85" | 22.33" | 18.91" | 21.15" | 22.63" | 19.23" | 21.22" | 21.46" | 23.59" | 20.57" | 20.21" | 21.91" | 26.19" | 23.10" | 24.57" | 20.49" | 17.92" | 23.30" | 25.29" | 21.17" | 20.27" | 23.42" | 26.04" | 24.62" | 20.62" | 21.50" | 21.92" | 19.05" | 22.85" | 22.36" | 24.08" | 23.07" | 26.35" | 21.62" | 24.87" | 22.55" | 24.99" | 25.22" | 22.86" | 20.11" | 21.41" | 20.26" | 22.79" | 23.28" | 23.37" | 20.30" | 22.10" | 22.46" | 22.31" | 23.83" | 21.94" | 20.17" |
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