Brought to you as a public service from none other than the National Weather Service National Hurricane Center:
Summary: The peak for major hurricanes (categories 3,4,5) came in the decades of the 1930s, 1940s and 1950s, when such storms averaged 9 per decade. In the 1960s there were 6 such storms; in the 1970s, 4; in the 1980s, 5; in the 1990s, 5; and for 2001-04, there were 3. Category 4 and 5 storms were also more prevalent in the past than they are now. As for Category 5 storms, there have been only three since the 1850s: in the decades of the 1930s, 1960s and 1990s.
So, what's this about Global Warming/Bush/Halliburton/Mean-Spirited Republicans/WalMart/Christians/Big Oil/Big Tobacco/White Males/Et Al causing an increase in hurricanes?