Given the following financial data for Procter & Gamble for the years 2019, 2020, and 2021, perform the required financial analysis:

	2019	2020	2021
Revenue	$67,684	$70,950	$76,118
Cost of Revenue	$32,741	$33,200	$36,000
Gross Profit	$34,943	$37,750	$40,118
Operating Expenses	$20,314	$21,100	$22,500
Operating Income	$14,629	$16,650	$17,618
Net Income	$9,000	$12,764	$14,280

	2019	2020	2021
Total Assets	$115,100	$120,700	$124,500
Total Liabilities	$55,600	$59,300	$61,200
Shareholders' Equity	$59,500	$61,400	$63,300

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. Analyze the financial performance of Procter & Gamble over these years.