Suppose that you work for a local real estate company and are given the task of investigating your companys seasonal sales patterns over the past ten years. After adjusting your sales values for inflation, you discover that:

• Your average quarterly sales equal $25 million
• Your seasonal sales equal:
  • Spring: $20 million
  • Summer: $40 million
  • Fall: $25 million
  • Winter: $15 million

Use this information to seasonally adjustment the raw 2019 sales figures. Which season had the best seasonally adjusted sales performance in 2019?

	2019 Sales ($ millions)
Spring	$28
Summer	$52
Fall	$22
Winter	$13