In my world, nuisance claims in general are few and far between. I couldn't give a good percentage overall, but from what I have seen, this arises often from farm operations and some non-farm pantywaist moving to the country. In those circumstances, the pantywaist seldom wins, but in Indiana, we normally protect the farms pretty well.
In some places that used to be normal, the liberal non-farm pantywaists (often from the coasts) have moved in en masse and changed the general political orientation of the region. A couple of years ago I went to Denver for a conference, and was saddened by what had become of this once upon a time frontier city.