5. ADP, Inc., is a manufacturer of specialty circuit boards in the personal computer industry. The firm has experienced phenomenal sales growth over its short five- year life. Selected financial statement data are found in the following table: 2003 2002 2001 2000 1999 Sales $3,000 $2,200 $1,800 $1,400 $1,200 Net income 150 110 90 70 60 Assets 2,700 1,980 1,620 1,260 1,080 Dividends 60 44 36 28 24 Common equity 812 722 656 602 560 Liabilities 1,888 1,258 964 658 520 Liabilities and equity 2,700 1,980 1,620 1,260 1,080 a. Calculate ADP's sustainable rate of growth for each of the five years of its existence. b. Compare the actual rates of growth in sales to the firm's sustainable rates calculated in part a. How has ADP been financing its growing asset needs?