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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 17.51" | 16.27" | 17.36" | 15.57" | 15.37" | 15.91" | 18.44" | 17.30" | 17.51" | 16.16" | 20.24" | 18.38" | 18.39" | 18.94" | 18.23" | 14.67" | 18.55" | 17.39" | 16.54" | 18.35" | 21.88" | 18.39" | 13.80" | 15.81" | 16.54" | 15.68" | 16.93" | 16.12" | 18.69" | 16.08" | 15.53" | 20.26" | 15.86" | 18.46" | 15.42" | 14.00" | 15.81" | 16.71" | 11.27" | 15.74" | 12.86" | 11.75" | 17.50" | 14.73" | 14.48" | 15.83" | 21.91" | 16.51" | 16.92" | 18.82" | 16.50" | 18.17" | 18.06" | 18.02" | 16.12" | 16.51" | 18.62" | 15.49" | 14.85" | 15.88" | 14.46" | 16.40" | 16.71" | 16.22" | 15.84" | 13.94" | 17.14" | 17.43" | 17.27" | 18.02" | 16.66" | 16.83" | 16.21" | 17.88" | 17.62" | 17.19" | 17.59" | 16.84" | 17.94" | 15.18" | 16.71" | 14.97" | 20.58" | 16.45" | 14.52" | 16.02" | 18.73" | 18.94" | 17.99" | 15.77" | 18.72" | 19.40" | 15.02" | 13.41" | 15.65" | 17.10" | 15.37" | 18.57" | 20.61" | 20.04" | 19.12" | 17.25" | 17.69" | 21.55" | 16.40" | 15.66" | 14.63" | 16.14" | 14.65" | 17.50" | 17.69" | 18.27" | 16.93" | 18.38" | 19.86" | 22.85" | 16.34" |
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