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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 36.10" | 27.43" | 29.95" | 32.17" | 26.08" | 46.34" | 29.96" | 23.69" | 36.25" | 26.15" | 49.50" | 28.95" | 34.56" | 38.56" | 31.62" | 31.55" | 31.65" | 41.35" | 36.21" | 30.71" | 30.99" | 33.05" | 26.55" | 24.56" | 42.73" | 35.54" | 32.00" | 43.14" | 43.50" | 28.46" | 25.06" | 40.29" | 38.59" | 36.79" | 37.30" | 26.59" | 26.52" | 35.02" | 41.15" | 35.77" | 37.63" | 26.98" | 32.37" | 32.75" | 33.20" | 41.36" | 37.52" | 35.94" | 27.86" | 35.67" | 39.35" | 51.76" | 36.52" | 28.64" | 40.81" | 44.09" | 30.11" | 33.76" | 45.68" | 25.84" | 38.86" | 30.64" | 37.86" | 36.53" | 37.94" | 25.07" | 43.93" | 26.38" | 23.86" | 34.19" | 26.13" | 39.40" | 30.64" | 33.85" | 33.53" | 26.64" | 27.06" | 33.41" | 41.64" | 39.66" | 46.42" | 29.34" | 30.24" | 30.75" | 48.45" | 41.96" | 28.63" | 30.51" | 42.61" | 32.44" | 29.57" | 25.33" | 36.80" | 32.69" | 46.92" | 39.45" | 57.99" | 39.84" | 39.82" | 37.22" | 42.38" | 28.30" | 43.58" | 34.08" | 34.34" | 25.98" | 39.19" | 29.36" | 32.28" | 47.04" | 29.49" | 27.90" | 33.81" | 29.15" | 29.45" | 26.62" | 24.24" | 38.98" |
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