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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 18.80" | 24.93" | 22.41" | 21.49" | 27.64" | 20.11" | 17.72" | 31.24" | 19.90" | 31.13" | 22.84" | 22.76" | 29.94" | 17.15" | 19.15" | 17.85" | 22.21" | 19.73" | 34.34" | 25.70" | 18.77" | 13.57" | 14.32" | 32.37" | 29.13" | 25.93" | 26.50" | 23.77" | 30.07" | 13.38" | 28.75" | 24.21" | 21.00" | 25.29" | 22.12" | 26.27" | 24.06" | 20.99" | 18.50" | 26.64" | 23.04" | 23.22" | 25.14" | 17.72" | 21.18" | 34.61" | 25.56" | 20.54" | 25.79" | 25.03" | 25.21" | 25.84" | 18.44" | 23.54" | 24.39" | 16.57" | 18.54" | 17.90" | 17.77" | 17.80" | 13.92" | 26.50" | 28.31" | 24.46" | 22.27" | 27.17" | 19.97" | 19.65" | 17.84" | 24.05" | 23.76" | 15.65" | 30.27" | 23.60" | 23.99" | 15.87" | 24.34" | 27.86" | 22.65" | 29.41" | 19.21" | 25.32" | 17.10" | 27.68" | 18.51" | 26.72" | 25.36" | 21.94" | 17.91" | 28.00" | 26.21" | 33.03" | 18.06" | 23.62" | 21.00" | 26.40" | 36.26" | 25.06" | 21.17" | 27.30" | 15.01" | 30.46" | 20.38" | 28.08" | 19.44" | 26.34" | 21.09" | 25.37" | 29.20" | 24.83" | 14.96" | 32.62" | 17.51" | 17.44" | 28.64" | 13.42" | 21.71" |
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