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.
| 1895 | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 19.43" | 19.69" | 20.35" | 20.15" | 19.65" | 20.55" | 18.81" | 19.12" | 21.60" | 19.87" | 22.78" | 21.84" | 20.89" | 22.06" | 21.51" | 17.08" | 18.99" | 21.66" | 18.95" | 19.74" | 22.98" | 21.34" | 18.55" | 17.80" | 20.86" | 20.97" | 19.56" | 21.36" | 21.09" | 17.83" | 16.58" | 19.23" | 21.27" | 20.57" | 20.28" | 17.00" | 17.30" | 20.27" | 19.32" | 15.92" | 21.15" | 17.72" | 20.90" | 21.64" | 19.88" | 20.44" | 20.80" | 20.79" | 19.28" | 21.76" | 22.17" | 20.36" | 19.71" | 20.61" | 21.47" | 21.73" | 20.30" | 19.17" | 20.41" | 17.61" | 18.99" | 17.99" | 22.08" | 21.69" | 19.84" | 19.70" | 20.76" | 19.33" | 17.79" | 20.08" | 20.13" | 18.37" | 19.46" | 19.88" | 20.55" | 18.60" | 18.87" | 19.55" | 22.41" | 20.68" | 23.01" | 18.35" | 19.04" | 20.79" | 23.34" | 19.71" | 19.93" | 21.81" | 21.95" | 19.99" | 18.52" | 19.48" | 19.90" | 16.41" | 20.96" | 22.07" | 22.10" | 20.91" | 23.27" | 20.22" | 22.65" | 20.91" | 21.82" | 23.13" | 20.74" | 19.02" | 19.54" | 18.14" | 20.61" | 21.64" | 21.18" | 18.87" | 19.88" | 21.37" | 20.43" | 21.75" | 19.90" | 18.12" |
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