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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 35.85" | 38.06" | 35.89" | 32.13" | 38.62" | 44.57" | 45.87" | 29.73" | 41.86" | 34.11" | 41.81" | 43.61" | 31.01" | 32.06" | 38.91" | 37.05" | 30.37" | 46.25" | 35.14" | 30.56" | 38.54" | 30.20" | 29.27" | 31.02" | 44.47" | 40.58" | 29.18" | 37.29" | 40.06" | 40.16" | 36.13" | 45.38" | 29.41" | 43.63" | 39.93" | 40.92" | 32.98" | 37.27" | 41.11" | 42.11" | 35.83" | 42.55" | 40.67" | 30.37" | 42.22" | 37.70" | 39.48" | 41.72" | 37.20" | 39.00" | 38.38" | 41.59" | 47.19" | 42.56" | 40.39" | 30.13" | 30.87" | 33.74" | 43.03" | 30.94" | 31.54" | 29.78" | 43.91" | 43.56" | 50.87" | 44.67" | 36.57" | 34.27" | 35.12" | 44.47" | 39.75" | 44.07" | 35.62" | 37.51" | 41.47" | 43.66" | 33.71" | 39.26" | 42.80" | 37.75" | 39.81" | 35.76" | 31.58" | 42.84" | 41.68" | 38.00" | 33.02" | 47.16" | 45.63" | 39.84" | 36.24" | 37.58" | 39.41" | 38.57" | 33.77" | 33.53" | 54.95" | 42.86" | 35.28" | 44.64" | 43.46" | 40.45" | 39.98" | 39.38" | 35.01" | 28.36" | 37.55" | 39.26" | 47.31" | 39.14" | 46.57" | 29.90" | 29.03" | 44.26" | 39.02" | 41.18" | 33.16" | 43.29" |
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