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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 29.12" | 36.90" | 37.15" | 39.90" | 35.95" | 32.64" | 39.73" | 41.52" | 40.59" | 35.49" | 37.95" | 37.50" | 39.95" | 34.66" | 32.85" | 34.04" | 39.98" | 38.78" | 37.99" | 33.32" | 38.62" | 35.95" | 36.62" | 35.95" | 40.79" | 35.47" | 36.46" | 30.51" | 34.29" | 37.76" | 33.09" | 37.92" | 41.36" | 36.66" | 38.81" | 25.36" | 36.70" | 38.39" | 43.75" | 37.85" | 39.14" | 41.88" | 46.99" | 39.03" | 36.94" | 43.52" | 34.23" | 47.30" | 37.94" | 40.28" | 49.09" | 40.06" | 41.19" | 45.70" | 37.81" | 48.12" | 43.80" | 45.28" | 39.81" | 41.08" | 40.00" | 47.03" | 35.98" | 42.42" | 42.33" | 38.97" | 39.98" | 36.80" | 31.39" | 36.46" | 33.73" | 35.10" | 41.08" | 37.31" | 37.13" | 43.19" | 40.26" | 51.81" | 45.09" | 42.91" | 49.58" | 40.80" | 46.20" | 42.75" | 48.09" | 36.82" | 40.56" | 38.58" | 46.22" | 45.32" | 41.83" | 43.31" | 40.58" | 35.53" | 44.02" | 49.07" | 33.15" | 41.56" | 45.56" | 47.31" | 37.10" | 56.09" | 38.38" | 39.96" | 41.34" | 40.83" | 34.20" | 43.50" | 53.65" | 53.79" | 43.49" | 47.68" | 44.87" | 45.90" | 42.70" | 42.66" | 59.80" | 42.96" |
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