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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 31.41" | 36.30" | 27.20" | 30.90" | 25.91" | 33.32" | 29.30" | 43.59" | 32.63" | 32.76" | 32.36" | 30.12" | 37.68" | 34.98" | 28.96" | 24.02" | 30.32" | 32.90" | 27.71" | 35.33" | 36.98" | 30.78" | 26.63" | 34.45" | 32.95" | 30.34" | 30.55" | 30.99" | 31.33" | 27.39" | 27.06" | 37.11" | 27.51" | 37.08" | 30.15" | 22.26" | 39.43" | 28.33" | 21.27" | 36.18" | 26.43" | 30.89" | 29.78" | 31.57" | 23.77" | 33.32" | 36.66" | 33.08" | 36.15" | 36.09" | 32.49" | 39.04" | 25.67" | 30.44" | 29.94" | 35.13" | 35.11" | 29.67" | 27.87" | 28.62" | 19.93" | 29.58" | 26.35" | 35.54" | 36.70" | 29.28" | 38.27" | 28.78" | 31.17" | 33.65" | 36.17" | 28.51" | 25.75" | 37.55" | 29.73" | 34.18" | 30.29" | 43.68" | 39.83" | 31.69" | 29.15" | 20.44" | 38.65" | 35.31" | 30.55" | 31.08" | 36.46" | 42.25" | 38.85" | 29.21" | 37.47" | 34.07" | 28.47" | 24.59" | 36.18" | 37.96" | 29.46" | 47.00" | 39.18" | 35.04" | 31.87" | 31.54" | 37.06" | 37.38" | 28.49" | 34.45" | 28.94" | 30.78" | 33.42" | 33.38" | 27.55" | 37.79" | 48.13" | 36.29" | 44.84" | 41.16" | 27.48" |
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