Choose from the options below and click "Plot" to create a time series graph.
Data are available from January 1895 through May 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 29.03" | 34.95" | 44.82" | 41.84" | 33.32" | 37.20" | 35.64" | 41.88" | 36.05" | 35.89" | 35.33" | 32.78" | 33.98" | 30.49" | 36.42" | 33.68" | 30.91" | 39.40" | 33.10" | 31.01" | 33.60" | 33.68" | 35.00" | 36.96" | 35.40" | 38.25" | 29.74" | 39.34" | 33.57" | 35.22" | 39.53" | 34.67" | 32.31" | 37.84" | 38.13" | 32.68" | 33.51" | 32.47" | 30.74" | 28.45" | 30.88" | 37.71" | 34.80" | 35.47" | 33.11" | 32.03" | 24.99" | 32.66" | 35.77" | 30.98" | 42.32" | 31.89" | 34.55" | 28.88" | 29.51" | 29.53" | 34.20" | 32.25" | 32.08" | 38.92" | 33.38" | 30.13" | 25.35" | 33.39" | 31.95" | 33.88" | 28.68" | 32.38" | 24.88" | 26.92" | 26.46" | 29.41" | 30.24" | 28.40" | 31.21" | 28.43" | 31.30" | 33.41" | 38.96" | 36.11" | 36.11" | 43.95" | 36.06" | 32.06" | 34.98" | 27.70" | 38.55" | 29.39" | 39.78" | 35.19" | 31.19" | 38.13" | 33.52" | 28.58" | 38.21" | 43.62" | 35.62" | 31.33" | 34.68" | 36.07" | 34.83" | 42.31" | 35.30" | 43.53" | 36.50" | 39.97" | 27.94" | 39.11" | 37.65" | 33.66" | 41.85" | 45.89" | 38.74" | 44.29" | 37.96" | 41.56" | 50.34" | 35.19" |
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