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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 22.87" | 24.66" | 36.14" | 32.17" | 26.26" | 27.51" | 33.64" | 27.68" | 32.12" | 26.10" | 22.57" | 27.69" | 18.59" | 29.19" | 26.86" | 23.42" | 21.19" | 26.95" | 24.15" | 24.18" | 28.07" | 26.82" | 24.99" | 23.10" | 29.23" | 32.21" | 25.22" | 30.27" | 23.54" | 25.21" | 25.89" | 22.81" | 28.94" | 29.46" | 25.78" | 20.45" | 30.71" | 29.73" | 30.32" | 32.49" | 26.18" | 36.57" | 36.34" | 37.89" | 30.79" | 34.50" | 25.91" | 32.61" | 25.75" | 23.87" | 33.88" | 28.93" | 28.82" | 31.97" | 27.61" | 30.20" | 32.78" | 38.64" | 38.73" | 27.73" | 35.21" | 27.49" | 19.93" | 34.27" | 30.08" | 30.97" | 30.05" | 25.34" | 23.72" | 23.85" | 20.55" | 20.48" | 30.29" | 26.62" | 29.06" | 24.66" | 28.17" | 40.25" | 36.08" | 29.30" | 33.74" | 35.16" | 30.65" | 33.79" | 41.79" | 30.48" | 24.87" | 37.00" | 41.99" | 39.97" | 28.29" | 30.00" | 29.63" | 27.18" | 40.19" | 38.10" | 31.96" | 31.66" | 26.97" | 36.53" | 22.78" | 36.58" | 29.90" | 37.78" | 28.78" | 36.81" | 31.75" | 27.77" | 34.38" | 31.21" | 29.61" | 39.57" | 31.20" | 40.39" | 35.53" | 34.07" | 47.19" | 25.03" |
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