6).Prepare common-sized balance sheets for all prior years.

BALANCE SHEET (USD in millions) 2020 Assets Liabilities Current assets Current liabilities Short-term debt $ 3,897.00 Cash and cash equivalents $ 6,877.00 Non-current liabilities Short-term investments $ 53,539.00 Long-term debt $ 21,457.00 Total current assets $ 60,416.00 Total liabilities $ 25,354.00 Non-current assets Stockholders' equity Gross property, plant and equipment $ 12,427.00 Common stock $ 22,340.00 Accumulated Depreciation $ (9,095.00) Retained earnings $ 16,054.00 Total non-current assets $ 3,332.00 Total stockholders' equity $ 38,394.00 Total assets $ 63,748.00 Totalliabilities and stockholders' equity $ 63,748.00Income Statements (USD in millions) 2016 2017 2018 2019 2020 Revenue $ 43,218.00 $ 46,061.00 $ 48,607.00 $ 47,142.00 $ 49,161.00 Cost of revenue $(16,682.00) $(17,852.00) $(19,167.00) $(19,373.00) $(19,480.00) Gross profit $ 26,536.00 $ 28,209.00 $ 29,440.00 $ 27,769.00 $ 29,681.00 Research and development $ (5,823.00) $ (5,488.00) $ (5,942.00) $ (6,294.00) $ (6,207.00) Sales, General and administrative $(11,720.00) $(11,969.00) $(11,802.00) $(11,437.00) $(11,861.00) Restructuring, merger and acquisition $ (799.00) $ (304.00) $ 105.00) $ (418.00) $ (484.00) Operating income $ 8,194.00 $ 10,448.00 $ 11,591.00 $ 9,620.00 $ 11,129.00 Interest Expense $ (628.00) $ 596.00) $ (583.00) $ (564.00) $ 566.00) Income before taxes $ 7,566.00 $ 9,852.00 $ 11,008.00 $ 9,056.00 $ 10,563.00 Provision for income taxes $ (1,335.00) $ (2,118.00) $ (1,244.00) $ (1,862.00) $ (2,220.00) Net income $ 6,231.00 $ 7,734.00 $ 9,764.00 $ 7,194.00 $ 8,343.00