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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 43.18" | 39.09" | 47.11" | 39.03" | 39.48" | 43.49" | 48.13" | 44.47" | 39.94" | 36.48" | 40.80" | 39.82" | 39.76" | 37.38" | 36.12" | 38.02" | 41.48" | 40.62" | 35.42" | 40.19" | 39.80" | 43.05" | 36.65" | 41.23" | 41.74" | 37.71" | 42.18" | 35.02" | 41.06" | 37.78" | 39.20" | 41.20" | 46.56" | 39.17" | 33.44" | 38.29" | 39.22" | 43.43" | 37.76" | 39.14" | 43.42" | 45.86" | 43.07" | 39.04" | 37.94" | 34.79" | 41.37" | 42.39" | 37.20" | 47.25" | 41.14" | 39.67" | 40.43" | 40.21" | 38.73" | 45.37" | 44.61" | 42.87" | 44.20" | 43.78" | 39.52" | 32.89" | 47.52" | 38.98" | 44.23" | 38.65" | 38.26" | 32.97" | 36.39" | 33.57" | 33.88" | 40.35" | 36.50" | 40.68" | 43.56" | 40.84" | 46.23" | 49.14" | 44.47" | 46.97" | 48.14" | 42.34" | 43.43" | 47.89" | 37.13" | 41.04" | 37.55" | 44.41" | 50.19" | 36.88" | 42.95" | 42.74" | 35.79" | 45.94" | 46.37" | 40.87" | 39.54" | 42.86" | 45.10" | 38.59" | 52.17" | 40.52" | 47.23" | 40.48" | 43.58" | 35.95" | 40.09" | 49.20" | 47.73" | 49.56" | 51.33" | 43.08" | 50.91" | 47.97" | 45.99" | 56.50" | 43.01" |
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