docs: def get_average(self, default=None):
          """
          Return the statistic's count divided by the number of rows in the table. If it cannot be calculated return
          `default`.
          :return: The average count value (count / table rows) or `default` if it cannot be calculated.
          """
          try:
              first_row = self.get_first()
              if first_row:
                  count0 = first_row[0]['Count']
              else:
                  count0 = 0
              average = (self.count - count0) / (self.get_number_of_rows() - 1)
          except Exception as e:
              logging.error(e)
              return default
          else:
              return average