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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 18.71" | 19.59" | 29.99" | 26.55" | 18.95" | 20.45" | 22.18" | 27.77" | 20.59" | 24.88" | 26.10" | 22.59" | 25.08" | 18.69" | 21.33" | 21.47" | 21.32" | 27.55" | 17.69" | 17.89" | 23.10" | 22.62" | 24.46" | 27.54" | 24.24" | 22.45" | 18.36" | 24.75" | 20.03" | 22.96" | 25.84" | 22.34" | 24.03" | 24.66" | 21.09" | 21.01" | 25.23" | 21.46" | 18.46" | 17.72" | 21.09" | 21.32" | 23.92" | 25.91" | 20.30" | 21.39" | 19.22" | 21.49" | 26.51" | 21.21" | 29.75" | 23.53" | 23.60" | 19.04" | 19.31" | 18.45" | 20.23" | 21.54" | 18.29" | 24.82" | 22.59" | 18.60" | 18.98" | 21.58" | 21.16" | 22.22" | 18.95" | 22.53" | 15.13" | 15.88" | 19.81" | 20.74" | 21.85" | 18.63" | 20.79" | 19.30" | 20.58" | 22.37" | 27.22" | 23.34" | 24.87" | 30.02" | 24.10" | 20.14" | 21.13" | 19.05" | 27.36" | 18.21" | 23.83" | 24.73" | 22.24" | 26.23" | 25.14" | 18.89" | 29.69" | 30.16" | 25.28" | 20.48" | 21.47" | 22.58" | 25.16" | 27.37" | 23.26" | 29.57" | 25.01" | 23.99" | 17.36" | 25.73" | 28.70" | 26.34" | 29.36" | 35.13" | 24.63" | 28.66" | 28.11" | 28.76" | 34.63" | 26.19" |
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