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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 37.10" | 34.80" | 40.21" | 40.91" | 34.68" | 36.34" | 41.39" | 42.66" | 41.25" | 34.51" | 37.32" | 36.07" | 39.76" | 34.76" | 33.90" | 32.70" | 37.80" | 40.34" | 36.08" | 32.61" | 41.25" | 34.45" | 38.24" | 37.20" | 39.06" | 38.34" | 35.00" | 37.57" | 34.61" | 36.14" | 39.06" | 37.00" | 46.36" | 41.13" | 36.80" | 30.02" | 39.51" | 39.26" | 35.24" | 33.88" | 41.12" | 37.60" | 40.31" | 41.85" | 33.95" | 34.05" | 33.93" | 42.99" | 39.08" | 38.01" | 43.02" | 41.71" | 41.71" | 39.29" | 36.38" | 41.98" | 39.37" | 39.67" | 38.39" | 40.12" | 41.97" | 35.24" | 37.65" | 40.29" | 41.46" | 36.89" | 36.95" | 33.66" | 34.88" | 29.01" | 33.32" | 33.14" | 38.52" | 40.88" | 38.37" | 40.95" | 39.58" | 49.70" | 42.67" | 40.87" | 47.87" | 45.06" | 49.42" | 40.73" | 39.37" | 35.22" | 41.24" | 40.04" | 42.72" | 39.37" | 40.63" | 43.17" | 37.85" | 35.02" | 47.30" | 47.45" | 35.34" | 46.40" | 39.15" | 37.67" | 41.27" | 47.94" | 41.25" | 38.89" | 40.21" | 41.66" | 35.87" | 42.09" | 47.13" | 48.21" | 44.43" | 52.26" | 44.77" | 42.77" | 44.17" | 48.94" | 47.69" | 39.71" |
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