Choose from the options below and click "Plot" to create a time series graph.
Data are available from January 1895 through May 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 26.18" | 31.37" | 30.15" | 31.43" | 27.99" | 31.66" | 27.37" | 31.79" | 32.41" | 29.70" | 32.75" | 30.45" | 30.09" | 29.34" | 31.85" | 25.59" | 32.71" | 30.98" | 28.01" | 29.57" | 30.42" | 33.31" | 26.77" | 29.01" | 29.76" | 28.25" | 31.23" | 31.75" | 28.34" | 29.35" | 25.07" | 32.38" | 30.96" | 32.56" | 30.80" | 22.31" | 30.00" | 33.20" | 29.78" | 25.68" | 28.50" | 26.72" | 31.10" | 31.86" | 30.11" | 32.47" | 31.69" | 35.22" | 32.09" | 28.64" | 35.31" | 27.92" | 32.54" | 28.28" | 32.26" | 35.07" | 37.60" | 29.89" | 29.79" | 35.28" | 28.46" | 28.26" | 31.86" | 25.99" | 36.59" | 31.72" | 30.90" | 26.84" | 24.88" | 29.28" | 34.40" | 29.44" | 33.72" | 35.06" | 30.95" | 32.64" | 29.86" | 34.45" | 33.44" | 32.60" | 36.49" | 28.16" | 33.77" | 31.14" | 32.55" | 31.93" | 32.24" | 34.52" | 35.13" | 31.92" | 39.48" | 34.69" | 30.79" | 32.60" | 27.53" | 36.10" | 35.63" | 32.99" | 32.69" | 32.12" | 32.72" | 34.80" | 30.32" | 29.65" | 31.62" | 33.14" | 35.51" | 31.71" | 31.74" | 35.61" | 30.39" | 36.00" | 31.44" | 37.41" | 34.29" | 30.92" | 36.45" | 31.14" |
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