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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 39.86" | 47.92" | 44.02" | 49.35" | 47.01" | 59.11" | 41.58" | 56.18" | 40.52" | 40.90" | 53.30" | 43.04" | 56.67" | 46.20" | 43.31" | 32.75" | 56.80" | 45.97" | 41.60" | 49.83" | 47.40" | 41.60" | 39.01" | 53.43" | 44.81" | 46.14" | 54.11" | 46.87" | 45.59" | 44.05" | 43.19" | 38.62" | 55.99" | 59.61" | 46.25" | 41.92" | 41.33" | 47.50" | 40.44" | 43.18" | 50.93" | 56.59" | 41.47" | 51.17" | 40.32" | 42.69" | 47.85" | 45.87" | 46.14" | 43.67" | 55.47" | 45.95" | 59.03" | 59.49" | 38.58" | 38.79" | 49.85" | 41.12" | 37.78" | 40.79" | 40.57" | 43.06" | 58.63" | 48.73" | 60.44" | 54.60" | 45.00" | 46.14" | 65.06" | 58.41" | 47.05" | 46.91" | 40.59" | 51.36" | 44.78" | 57.68" | 50.83" | 57.89" | 49.25" | 55.10" | 48.25" | 48.93" | 48.39" | 48.25" | 49.09" | 42.29" | 49.57" | 49.04" | 58.18" | 40.84" | 40.25" | 49.45" | 42.29" | 49.78" | 46.65" | 62.33" | 43.61" | 50.25" | 51.45" | 60.27" | 46.47" | 50.31" | 62.28" | 41.39" | 44.62" | 41.14" | 35.25" | 63.62" | 42.87" | 51.21" | 41.78" | 41.54" | 42.56" | 46.45" | 53.80" | 36.82" | 44.84" |
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