This is the number of hurricanes, (typhoons and tropical cyclones) hitting the US Atlantic coast in the period 1944 to 1974.
Source : http://www.aoml.noaa.gov/hrd/tcfaq/tcfaqEdiaNS.html
The average is 10 per year and the trend is flat.
This is the number of hurricanes in the period 1974 to 2003.
The average is 10.5 per year and the trend is increasing by 0.17 per year.
Given that these are data sets with 30 data points in each, the change in trend would seem to be significant.
Dave Kimble April 2005
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