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 | 2013 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 24.63" | 27.93" | 28.67" | 27.59" | 26.57" | 24.93" | 20.68" | 35.71" | 15.06" | 28.18" | 27.91" | 18.85" | 27.68" | 16.62" | 19.41" | 17.62" | 34.47" | 30.13" | 23.78" | 27.92" | 21.60" | 23.96" | 13.59" | 37.06" | 31.68" | 26.95" | 29.61" | 29.88" | 32.34" | 18.16" | 38.28" | 29.91" | 23.59" | 29.59" | 33.53" | 28.03" | 38.26" | 33.31" | 27.22" | 28.94" | 21.29" | 27.85" | 28.31" | 23.58" | 22.83" | 30.57" | 26.67" | 22.67" | 28.64" | 30.77" | 35.13" | 31.58" | 33.19" | 36.74" | 31.56" | 25.16" | 22.58" | 25.27" | 22.00" | 23.59" | 24.03" | 26.08" | 31.65" | 19.08" | 24.97" | 35.53" | 28.10" | 18.95" | 25.74" | 26.94" | 28.80" | 19.96" | 25.42" | 27.61" | 22.38" | 24.68" | 30.67" | 36.75" | 35.83" | 29.92" | 23.07" | 27.61" | 28.21" | 32.65" | 30.13" | 20.46" | 21.85" | 43.48" | 29.36" | 33.32" | 26.16" | 38.83" | 33.16" | 27.54" | 35.08" | 34.18" | 33.28" | 32.24" | 27.52" | 32.31" | 23.10" | 32.83" | 38.73" | 28.68" | 17.56" | 35.35" | 30.28" | 36.37" | 27.74" | 33.87" | 19.16" | 32.14" | 24.71" | 22.72" | 37.55" | 18.85" | 30.14" | 29.06" |
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