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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 25.89" | 22.61" | 21.62" | 19.23" | 24.54" | 22.86" | 28.85" | 28.13" | 23.68" | 31.84" | 25.34" | 20.47" | 27.12" | 23.34" | 17.82" | 20.87" | 22.58" | 19.05" | 23.33" | 35.90" | 19.10" | 20.71" | 21.51" | 26.10" | 24.39" | 21.08" | 17.42" | 27.96" | 19.68" | 21.87" | 21.34" | 24.04" | 23.17" | 22.95" | 25.89" | 18.54" | 21.46" | 19.35" | 15.16" | 22.74" | 14.21" | 18.16" | 22.22" | 15.90" | 17.37" | 24.36" | 25.61" | 17.88" | 27.36" | 22.41" | 25.79" | 22.60" | 21.53" | 25.76" | 22.81" | 29.74" | 19.99" | 20.12" | 20.29" | 16.78" | 16.27" | 26.81" | 23.21" | 23.44" | 22.93" | 22.22" | 26.40" | 21.27" | 19.97" | 28.52" | 19.26" | 22.11" | 21.85" | 22.76" | 19.65" | 23.71" | 23.12" | 28.85" | 16.44" | 20.51" | 17.48" | 28.89" | 22.16" | 25.90" | 17.32" | 23.43" | 27.51" | 26.43" | 25.87" | 23.40" | 27.12" | 25.33" | 21.09" | 16.79" | 21.70" | 22.33" | 25.82" | 32.03" | 21.55" | 26.13" | 25.56" | 21.98" | 26.54" | 23.48" | 20.33" | 25.40" | 15.96" | 19.79" | 23.57" | 23.87" | 20.14" | 30.33" | 29.10" | 25.07" | 28.28" | 25.50" | 12.99" |
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