Evaluate the revenue performance of three companies over the past three years:

Company	Year	Revenue (in billions)
Walmart	2023	$560
	2022	$540
	2021	$520
Apple	2023	$370
	2022	$350
	2021	$330
Amazon	2023	$450
	2022	$430
	2021	$410

Requirements:

• Calculate the average annual revenue for each company.
• Identify the company with the highest revenue growth rate over the three years.

Discuss potential factors influencing the revenue trends of each company.