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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 40.84" | 41.20" | 45.58" | 47.28" | 37.43" | 42.65" | 45.72" | 51.05" | 39.64" | 48.01" | 51.72" | 47.09" | 47.31" | 38.94" | 35.56" | 43.14" | 45.75" | 39.89" | 36.25" | 44.91" | 38.46" | 43.21" | 37.37" | 52.58" | 49.54" | 38.43" | 42.64" | 40.24" | 53.20" | 31.20" | 46.80" | 39.30" | 57.23" | 36.50" | 32.51" | 40.77" | 39.04" | 61.94" | 52.21" | 52.57" | 52.34" | 50.20" | 51.74" | 47.27" | 40.84" | 36.15" | 41.01" | 38.38" | 44.67" | 51.39" | 48.70" | 37.59" | 54.79" | 48.62" | 40.74" | 37.70" | 55.11" | 48.50" | 39.07" | 43.46" | 40.63" | 40.67" | 60.32" | 39.45" | 48.92" | 44.96" | 39.77" | 38.26" | 37.26" | 36.00" | 32.51" | 49.23" | 31.91" | 45.17" | 41.89" | 48.03" | 49.26" | 52.30" | 42.51" | 53.48" | 37.40" | 36.49" | 55.07" | 56.12" | 40.89" | 39.46" | 39.90" | 49.85" | 52.10" | 40.87" | 31.10" | 42.44" | 40.38" | 58.55" | 45.50" | 43.55" | 40.37" | 43.63" | 55.24" | 33.19" | 58.11" | 45.22" | 48.34" | 44.57" | 51.44" | 42.14" | 35.41" | 62.52" | 50.38" | 41.94" | 50.57" | 41.05" | 42.87" | 49.78" | 52.24" | 50.92" | 29.65" |
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