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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 27.14" | 29.57" | 27.04" | 28.98" | 27.95" | 28.36" | 26.95" | 31.26" | 27.05" | 29.27" | 30.36" | 31.88" | 31.07" | 29.13" | 26.67" | 25.18" | 31.60" | 28.48" | 28.96" | 30.10" | 31.71" | 26.96" | 23.81" | 30.23" | 30.66" | 29.58" | 30.11" | 28.29" | 28.47" | 24.68" | 27.23" | 32.58" | 29.91" | 30.06" | 26.84" | 23.73" | 29.72" | 28.45" | 24.72" | 29.49" | 26.06" | 29.05" | 30.28" | 27.40" | 25.90" | 29.71" | 32.01" | 30.08" | 27.91" | 30.09" | 30.98" | 30.57" | 28.59" | 30.14" | 29.15" | 29.56" | 29.64" | 26.92" | 25.17" | 25.46" | 26.47" | 29.17" | 30.76" | 27.90" | 29.94" | 28.80" | 29.74" | 26.23" | 26.59" | 29.24" | 27.22" | 27.84" | 28.78" | 30.42" | 28.46" | 27.82" | 30.22" | 34.15" | 31.67" | 31.87" | 28.40" | 24.98" | 31.96" | 30.92" | 30.10" | 26.25" | 31.47" | 34.17" | 31.04" | 28.62" | 30.45" | 31.02" | 25.25" | 29.52" | 29.55" | 31.67" | 29.34" | 33.55" | 29.28" | 32.83" | 29.46" | 33.90" | 32.74" | 30.93" | 26.81" | 27.26" | 27.32" | 30.92" | 30.12" | 32.74" | 27.98" | 30.21" | 30.06" | 30.09" | 33.10" | 30.08" | 27.01" |
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