I always found it an interesting stroke of "luck" that the CONUS had two Cat 4+ landfalls in the span of four years, each of which at the time was the costliest U.S. hurricane (Hugo and Andrew), in what was supposedly a "down" period of activity (you also had Bob in there as well, and Iniki in the Pacific). Then the U.S. went 12 years without a major (100kt+) hurricane landfall during an "up" period, after the assault of Charley, Francis, Ivan, Jeanne, Dennis, Katrina, Rita and Wilma from 2004-'05. Now we seem to be in another burst of activity, with Harvey, Irma, Michael, Laura and Ida from 2017 onwards (not to mention numerous weaker hurricanes and tropical storms in that timespan).