observational data points aren't a great measure, In any average within a large set of data, there's always a chance to see extreme highs and extreme lows. Unless you have something more than based on perception or observation, you're making a large assumption that it's actually occurring.
Not writing this to attack you so please don't take it personal. Just sharing my thoughts.
Not writing this to attack you so please don't take it personal. Just sharing my thoughts.