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.
| 1895 | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 26.77" | 33.54" | 38.15" | 28.16" | 32.42" | 33.70" | 30.04" | 27.44" | 35.99" | 27.25" | 34.33" | 27.84" | 32.32" | 32.60" | 38.39" | 31.08" | 32.03" | 41.43" | 28.49" | 27.96" | 29.02" | 32.64" | 38.04" | 25.50" | 33.62" | 38.74" | 32.72" | 38.50" | 39.90" | 28.85" | 20.95" | 28.57" | 39.08" | 38.65" | 39.32" | 23.59" | 25.94" | 31.09" | 35.58" | 29.90" | 32.91" | 25.48" | 27.25" | 34.32" | 37.17" | 31.07" | 22.73" | 30.02" | 27.26" | 33.67" | 35.15" | 30.72" | 24.28" | 32.61" | 34.10" | 37.77" | 29.68" | 25.30" | 31.99" | 23.07" | 36.84" | 33.71" | 31.66" | 29.76" | 30.22" | 26.86" | 35.30" | 33.04" | 32.38" | 36.38" | 33.02" | 28.78" | 35.29" | 25.33" | 28.46" | 32.12" | 32.79" | 31.06" | 41.03" | 35.47" | 38.38" | 29.15" | 30.29" | 27.68" | 39.27" | 29.14" | 31.36" | 30.84" | 32.85" | 36.65" | 27.84" | 24.23" | 24.29" | 21.85" | 41.32" | 31.65" | 37.69" | 30.16" | 27.45" | 42.41" | 29.74" | 32.64" | 37.90" | 40.30" | 27.77" | 29.48" | 31.61" | 30.04" | 43.49" | 35.70" | 31.48" | 27.47" | 18.25" | 31.66" | 34.69" | 33.02" | 36.22" | 24.88" |
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