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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 46.53" | 46.26" | 41.60" | 56.38" | 45.03" | 51.31" | 57.76" | 49.52" | 46.23" | 41.17" | 50.22" | 51.17" | 52.44" | 47.53" | 47.82" | 43.19" | 49.13" | 55.05" | 47.03" | 46.35" | 45.27" | 47.47" | 44.53" | 51.35" | 51.06" | 53.74" | 43.84" | 51.62" | 50.32" | 54.25" | 40.84" | 45.21" | 41.85" | 60.45" | 58.12" | 42.46" | 43.16" | 54.11" | 42.76" | 50.16" | 55.16" | 53.64" | 48.10" | 50.69" | 48.41" | 44.85" | 47.13" | 50.04" | 47.83" | 52.07" | 55.55" | 50.60" | 59.23" | 60.01" | 48.86" | 45.87" | 48.71" | 48.79" | 50.69" | 38.71" | 45.16" | 45.58" | 56.75" | 49.55" | 60.01" | 51.20" | 52.24" | 49.85" | 50.17" | 57.81" | 50.90" | 47.97" | 45.55" | 45.27" | 52.29" | 50.35" | 55.77" | 52.51" | 56.45" | 52.50" | 55.91" | 51.41" | 51.01" | 50.88" | 54.45" | 46.72" | 47.12" | 54.83" | 56.67" | 48.39" | 47.38" | 49.38" | 45.14" | 43.55" | 60.52" | 47.55" | 54.69" | 56.10" | 47.41" | 58.60" | 53.85" | 54.73" | 60.60" | 48.44" | 45.55" | 41.76" | 46.86" | 53.02" | 61.58" | 52.63" | 55.16" | 45.18" | 40.47" | 46.74" | 63.27" | 42.80" | 45.37" | 51.79" |
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