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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 20.92" | 26.14" | 24.75" | 23.98" | 28.53" | 23.66" | 19.20" | 31.75" | 21.98" | 33.27" | 23.98" | 26.13" | 31.66" | 20.01" | 21.22" | 19.06" | 24.19" | 22.10" | 35.54" | 31.76" | 24.53" | 16.27" | 15.98" | 33.93" | 32.40" | 31.29" | 27.46" | 24.88" | 32.27" | 14.64" | 30.82" | 26.43" | 22.26" | 27.31" | 22.95" | 27.71" | 26.10" | 24.40" | 21.46" | 27.81" | 24.57" | 24.60" | 27.26" | 18.84" | 23.49" | 37.61" | 28.14" | 24.82" | 26.36" | 29.27" | 28.07" | 28.71" | 20.99" | 25.08" | 26.78" | 18.91" | 19.71" | 18.46" | 21.11" | 19.21" | 16.60" | 27.63" | 29.69" | 26.55" | 24.79" | 30.57" | 21.55" | 20.84" | 19.42" | 26.58" | 25.72" | 20.40" | 32.39" | 25.60" | 26.63" | 17.72" | 29.65" | 31.28" | 24.43" | 35.07" | 21.68" | 26.80" | 19.39" | 30.60" | 21.50" | 29.16" | 28.58" | 23.14" | 20.06" | 29.97" | 27.27" | 35.98" | 20.38" | 25.30" | 23.39" | 28.42" | 39.36" | 27.05" | 22.76" | 29.30" | 17.73" | 35.63" | 22.78" | 31.78" | 20.81" | 26.81" | 24.80" | 27.15" | 31.29" | 28.03" | 18.39" | 35.10" | 20.49" | 22.18" | 30.31" | 14.69" | 22.43" |
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