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.
| 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 | 2013 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 39.57" | 30.21" | 28.82" | 31.93" | 34.63" | 50.06" | 25.03" | 44.14" | 39.63" | 34.94" | 48.85" | 33.80" | 40.72" | 34.98" | 27.89" | 26.05" | 26.77" | 30.25" | 43.76" | 47.84" | 29.59" | 25.52" | 16.04" | 35.00" | 56.49" | 36.58" | 31.40" | 39.63" | 45.29" | 28.34" | 32.59" | 36.92" | 26.69" | 32.43" | 34.19" | 39.56" | 32.28" | 29.40" | 31.87" | 28.87" | 44.41" | 42.90" | 28.70" | 29.30" | 21.56" | 43.12" | 44.10" | 38.64" | 32.33" | 35.66" | 35.47" | 45.89" | 25.75" | 25.83" | 38.64" | 22.05" | 27.42" | 31.14" | 29.48" | 17.49" | 24.91" | 17.57" | 49.09" | 35.22" | 37.82" | 45.80" | 33.28" | 25.58" | 22.03" | 30.09" | 38.42" | 28.35" | 41.28" | 40.63" | 36.24" | 31.43" | 36.86" | 37.13" | 50.00" | 36.20" | 34.43" | 48.89" | 28.69" | 36.56" | 39.57" | 29.52" | 43.55" | 28.60" | 38.16" | 28.31" | 37.23" | 38.96" | 36.95" | 24.52" | 23.00" | 34.14" | 47.70" | 45.00" | 35.89" | 40.27" | 30.58" | 26.55" | 46.26" | 43.49" | 25.66" | 36.73" | 37.15" | 44.69" | 32.07" | 47.79" | 23.79" | 34.83" | 44.37" | 18.97" | 35.44" | 36.62" | 16.97" | 30.15" |
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