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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 39.74" | 44.50" | 39.34" | 52.35" | 37.41" | 39.19" | 25.94" | 45.31" | 42.25" | 41.28" | 48.65" | 40.92" | 37.73" | 44.61" | 44.87" | 37.12" | 37.91" | 42.00" | 35.53" | 36.18" | 54.62" | 34.65" | 32.56" | 36.66" | 41.80" | 37.88" | 44.37" | 40.92" | 41.36" | 39.67" | 40.25" | 44.22" | 53.70" | 48.53" | 47.97" | 27.74" | 43.14" | 36.60" | 36.55" | 36.08" | 46.77" | 34.55" | 34.34" | 41.09" | 36.94" | 34.85" | 41.51" | 45.44" | 38.56" | 40.33" | 54.16" | 41.76" | 41.11" | 44.06" | 46.93" | 36.89" | 49.80" | 32.70" | 25.48" | 34.54" | 33.21" | 32.38" | 47.71" | 43.53" | 38.04" | 33.24" | 49.92" | 33.07" | 29.39" | 39.44" | 42.12" | 34.96" | 42.17" | 43.65" | 40.03" | 45.04" | 33.11" | 40.82" | 56.36" | 43.69" | 39.72" | 28.98" | 43.92" | 42.06" | 38.62" | 28.28" | 48.79" | 47.20" | 41.57" | 48.20" | 50.79" | 44.01" | 40.24" | 35.69" | 34.27" | 50.64" | 37.72" | 43.96" | 55.18" | 44.21" | 41.60" | 43.13" | 40.84" | 51.19" | 35.63" | 36.73" | 45.22" | 38.97" | 42.76" | 48.46" | 34.31" | 39.45" | 39.05" | 56.57" | 53.35" | 44.16" | 45.64" | 32.89" |
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