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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 24.04" | 32.71" | 27.86" | 28.12" | 28.92" | 32.05" | 25.36" | 33.28" | 33.58" | 28.30" | 33.99" | 31.37" | 28.03" | 30.47" | 32.33" | 19.84" | 32.02" | 27.98" | 28.62" | 30.24" | 32.22" | 30.60" | 25.27" | 28.42" | 31.20" | 28.43" | 28.38" | 28.14" | 25.31" | 29.16" | 25.75" | 30.53" | 28.40" | 31.05" | 26.84" | 23.82" | 28.59" | 27.54" | 25.04" | 25.20" | 29.05" | 23.47" | 27.67" | 33.41" | 25.42" | 29.75" | 32.45" | 32.37" | 29.67" | 31.08" | 32.33" | 29.98" | 29.92" | 25.53" | 28.62" | 29.67" | 36.63" | 27.18" | 29.22" | 31.60" | 25.88" | 25.81" | 30.25" | 23.60" | 33.57" | 30.17" | 29.89" | 28.65" | 24.90" | 28.54" | 36.03" | 26.34" | 28.24" | 34.56" | 29.35" | 30.97" | 30.06" | 33.00" | 34.19" | 28.54" | 31.47" | 21.48" | 34.97" | 30.93" | 31.55" | 28.35" | 30.65" | 35.04" | 33.53" | 32.55" | 34.32" | 35.05" | 28.09" | 25.20" | 24.65" | 33.68" | 35.81" | 30.92" | 36.43" | 30.25" | 31.79" | 31.91" | 28.30" | 32.58" | 31.88" | 31.15" | 33.52" | 31.17" | 27.30" | 33.96" | 30.83" | 29.94" | 34.13" | 34.72" | 32.16" | 37.05" | 30.39" | 27.46" |
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