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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 15.28" | 23.25" | 24.43" | 19.68" | 20.11" | 21.65" | 23.15" | 24.55" | 23.38" | 20.07" | 17.89" | 21.78" | 18.24" | 21.21" | 20.84" | 18.05" | 16.39" | 20.75" | 18.68" | 19.41" | 18.62" | 22.96" | 20.80" | 18.49" | 21.41" | 22.17" | 18.36" | 23.67" | 17.21" | 19.71" | 19.36" | 17.11" | 18.62" | 22.90" | 21.66" | 18.13" | 21.30" | 18.43" | 20.91" | 18.35" | 19.59" | 21.18" | 21.28" | 21.80" | 19.47" | 23.62" | 16.29" | 22.02" | 21.26" | 19.84" | 24.90" | 19.87" | 24.35" | 22.96" | 17.37" | 19.70" | 23.76" | 21.68" | 22.94" | 21.35" | 18.33" | 22.67" | 17.02" | 22.34" | 18.56" | 22.35" | 23.27" | 17.61" | 16.47" | 17.66" | 14.02" | 15.67" | 20.57" | 18.51" | 20.44" | 20.63" | 19.68" | 28.23" | 24.34" | 21.62" | 21.67" | 22.08" | 20.33" | 17.62" | 20.51" | 20.09" | 22.14" | 20.59" | 25.08" | 27.94" | 18.28" | 20.80" | 18.12" | 18.38" | 24.90" | 22.25" | 17.21" | 20.21" | 21.08" | 22.77" | 16.10" | 26.30" | 18.93" | 25.25" | 16.58" | 25.41" | 19.10" | 22.14" | 22.93" | 22.59" | 21.69" | 24.07" | 21.64" | 26.93" | 23.60" | 22.06" | 26.32" | 18.62" |
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