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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 24.12" | 21.89" | 23.73" | 18.83" | 24.42" | 22.72" | 28.51" | 28.64" | 23.07" | 31.65" | 24.71" | 23.02" | 24.49" | 23.23" | 20.68" | 18.21" | 23.76" | 20.01" | 23.06" | 35.56" | 19.21" | 21.57" | 18.61" | 25.62" | 25.33" | 22.93" | 15.85" | 28.75" | 20.69" | 21.10" | 20.85" | 25.65" | 19.28" | 23.75" | 25.22" | 19.97" | 23.33" | 20.34" | 13.52" | 23.00" | 15.28" | 17.10" | 23.13" | 15.99" | 15.55" | 24.45" | 26.79" | 17.65" | 26.58" | 24.35" | 20.28" | 25.78" | 21.71" | 26.37" | 23.18" | 29.26" | 20.82" | 18.78" | 20.95" | 17.96" | 14.86" | 25.74" | 25.66" | 21.55" | 24.21" | 21.74" | 26.69" | 21.77" | 20.53" | 27.66" | 19.61" | 21.72" | 20.15" | 22.31" | 20.43" | 22.70" | 23.57" | 29.00" | 18.02" | 19.63" | 19.20" | 27.05" | 23.18" | 23.22" | 20.06" | 21.87" | 26.41" | 26.76" | 25.75" | 25.01" | 26.20" | 26.53" | 22.29" | 17.01" | 19.82" | 21.58" | 26.23" | 32.13" | 20.78" | 27.16" | 25.42" | 20.95" | 25.10" | 28.09" | 17.09" | 26.35" | 15.86" | 20.89" | 22.61" | 24.03" | 21.42" | 28.23" | 27.26" | 26.09" | 30.87" | 24.68" | 14.32" |
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