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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 23.29" | 26.35" | 30.30" | 31.15" | 22.22" | 25.25" | 30.60" | 29.51" | 27.11" | 27.32" | 27.08" | 28.21" | 30.47" | 22.66" | 23.67" | 24.46" | 27.38" | 28.20" | 25.50" | 23.25" | 27.37" | 27.35" | 28.92" | 27.84" | 30.61" | 29.98" | 26.49" | 26.98" | 24.38" | 27.92" | 27.37" | 28.73" | 32.37" | 30.02" | 28.37" | 20.89" | 28.43" | 29.07" | 29.78" | 28.04" | 28.23" | 25.78" | 32.54" | 31.64" | 24.06" | 29.63" | 23.22" | 29.79" | 30.85" | 27.79" | 36.35" | 28.45" | 30.49" | 30.62" | 24.93" | 28.43" | 29.47" | 28.07" | 26.44" | 32.79" | 29.87" | 27.85" | 24.00" | 31.33" | 30.20" | 28.81" | 28.76" | 27.39" | 24.71" | 21.34" | 22.97" | 24.31" | 29.92" | 27.38" | 29.54" | 29.23" | 27.43" | 35.44" | 31.95" | 28.99" | 33.60" | 31.78" | 33.67" | 25.38" | 32.43" | 27.30" | 30.98" | 27.26" | 34.31" | 31.33" | 29.86" | 29.92" | 30.36" | 28.30" | 35.71" | 35.10" | 26.71" | 29.25" | 29.28" | 29.52" | 28.72" | 37.64" | 27.26" | 28.85" | 28.06" | 31.23" | 22.47" | 31.65" | 36.89" | 35.84" | 36.80" | 39.55" | 30.70" | 32.36" | 34.84" | 30.57" | 41.92" | 30.58" |
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