Review the following comparative income statements for Coca-Cola Company for the years ended December 31, 2022, and 2021.

Coca-Cola Company	2022	2021
Sales	$43,004	$38,655
Cost of Goods Sold	$19,751	$17,528
Gross Profit	$23,253	$21,127
Operating Expenses	$13,427	$12,890
Net Income	$9,542	$8,654

Requirements:

1. Calculate the gross profit margin for each year.
2. Calculate the operating profit margin for each year.
3. Compute the net profit margin for each year.
4. Discuss the factors contributing to the changes in Coca-Cola's profitability from 2021 to 2022.