Using the financial data of Goldman Sachs provided below for the years 2018, 2019, and 2020, perform the required analysis:

	2018	2019	2020
Revenue	$36,616	$35,387	$44,560
Cost of Revenue	$16,209	$16,045	$18,950
Gross Profit	$20,407	$19,342	$25,610
Operating Expenses	$13,738	$13,328	$15,760
Operating Income	$6,669	$6,014	$9,850
Net Income	$4,286	$4,466	$6,893

	2018	2019	2020
Total Assets	$935,352	$992,976	$1,163,228
Total Liabilities	$876,248	$925,788	$1,080,650
Shareholders' Equity	$59,104	$67,188	$82,578

Requirements:

1. Calculate the gross profit margin for each year.
2. Determine the operating profit margin for each year.
3. Calculate the net profit margin for each year.
4. Compute the return on assets (ROA) for each year.
5. Compute the return on equity (ROE) for each year.
6. Discuss the financial performance and health of Goldman Sachs over these three years.