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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 36.42" | 35.48" | 42.63" | 42.63" | 37.52" | 34.08" | 42.63" | 43.94" | 36.42" | 33.96" | 37.01" | 36.78" | 41.63" | 34.65" | 31.61" | 31.67" | 38.28" | 39.46" | 33.90" | 31.63" | 38.21" | 36.43" | 36.94" | 36.87" | 39.38" | 37.68" | 34.59" | 36.51" | 32.68" | 35.21" | 36.53" | 36.41" | 43.07" | 37.07" | 34.76" | 27.89" | 38.70" | 37.56" | 36.00" | 36.16" | 41.15" | 36.92" | 39.09" | 42.16" | 31.86" | 34.32" | 34.32" | 39.46" | 36.60" | 36.17" | 42.13" | 37.93" | 37.32" | 39.51" | 35.30" | 40.83" | 39.98" | 39.86" | 34.95" | 41.60" | 38.71" | 34.05" | 36.00" | 37.62" | 39.97" | 36.58" | 34.70" | 34.57" | 33.88" | 28.37" | 30.86" | 31.93" | 37.74" | 35.92" | 39.07" | 38.86" | 38.75" | 45.88" | 42.75" | 39.37" | 45.03" | 40.59" | 45.65" | 40.09" | 37.98" | 31.92" | 39.70" | 35.98" | 43.07" | 37.56" | 39.62" | 37.96" | 35.41" | 34.33" | 43.53" | 45.57" | 34.79" | 39.92" | 39.41" | 36.63" | 39.53" | 47.34" | 39.69" | 38.68" | 37.86" | 38.90" | 31.43" | 40.04" | 45.53" | 45.25" | 42.97" | 48.86" | 42.58" | 41.64" | 47.38" | 42.51" | 46.10" | 40.18" |
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