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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 31.64" | 32.32" | 36.41" | 34.47" | 31.74" | 28.99" | 30.65" | 38.32" | 31.36" | 34.48" | 34.25" | 36.37" | 44.49" | 31.97" | 23.94" | 23.14" | 31.88" | 25.64" | 30.81" | 41.66" | 36.33" | 21.75" | 25.68" | 37.00" | 34.20" | 40.42" | 32.46" | 31.18" | 40.52" | 25.64" | 32.02" | 44.91" | 38.02" | 36.93" | 30.09" | 29.72" | 37.21" | 27.90" | 26.96" | 38.29" | 22.89" | 29.96" | 38.27" | 26.65" | 26.62" | 38.58" | 44.47" | 36.59" | 32.68" | 43.52" | 32.57" | 37.29" | 33.20" | 35.88" | 37.11" | 33.05" | 28.23" | 27.60" | 25.65" | 27.74" | 24.07" | 41.81" | 37.07" | 32.09" | 40.30" | 35.33" | 35.71" | 28.37" | 23.82" | 33.99" | 27.30" | 30.18" | 36.53" | 36.16" | 28.22" | 30.33" | 31.56" | 45.27" | 35.24" | 47.45" | 28.13" | 30.00" | 31.45" | 33.01" | 28.69" | 29.17" | 41.42" | 30.97" | 30.50" | 42.78" | 36.49" | 47.03" | 34.49" | 37.75" | 40.94" | 32.78" | 43.76" | 42.68" | 34.89" | 42.58" | 28.76" | 42.79" | 37.92" | 43.23" | 35.07" | 33.40" | 34.00" | 30.43" | 37.56" | 34.18" | 26.31" | 47.27" | 38.79" | 33.60" | 39.86" | 22.12" | 31.19" |
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