Huh, this sounded interesting so i decided to look into it.
The
NOAA data sure makes it look like the number of hurricanes has gone down, but that's just for the US. So i tried to find a list of all Atlantic hurricanes, and
wikipedia had the most concise list i could find.
Based on that it looks like the Atlantic had a brief dip in hurricane intensity in the 70s and 80s, but both the total number of storms and the number of major hurricanes has increased since then.
Comparing the two, it seems like the US had a very bad decade from 1940 to 1950, in which 41% of all Atlantic hurricanes hit the US, including 38% of the major ones. From 1950 to 1960 was a little lower at 27%/32%, and since then it's stayed mostly in the 20-30% range, hitting a low of 22%/19% in the 90s. Unfortunately the NOAA chart stops in 2004, so i can't compare past that point without finding/compiling additional data.
So if you look at just the US data, particularly the NOAA list, it looks like Hurricanes peaked in the 40s and 50s and have been getting better since then, but if you look at the whole Atlantic hurricanes have been a lot more constant, with a gradual increase in both number and intensity in the past few decades. But luckily for the US most of them have hit other areas.
The interesting question is, have we just been getting lucky recently? Or is there something that's causing hurricanes to be more likely to miss the US?