Table 17-1 shows data on earnings, expenses, and assets for all insured banks. Calculate the annual growth rates in the various income, expense, earnings, and asset categories from 1991 to 2014. If part of the growth rates in assets, earnings, and expenses can be attributed to technological change, in what areas of operating performance has technological change appeared to have the greatest impact? What growth rates are more likely to be caused by economy-wide economic activity?