On average, how many years elapse between hurricane strikes in Dade County, Florida?

I'll guess 4 years for Dade, and 40 years for Duval, Clay and St.
Johns counties, which are in North-East Florida. North-East Florida
had about a million trees fail, mostly because the trees had not been
stressed in 40 years, by two hurricanes that missed us by about 200
miles in 2004. There may be considerable variety of opinion in what
the word "strikes" means. A tall tree in our yard is leaning about 7
degrees, like the tower of Pizza as a result of the two near misses.
I've been planting grass and dirt on the exposed roots, in hopes it
will not fall this decade.   Neil