Cost of a Postage Stamp in 1920 Adjusted for Inflation

A first class mail postage stamp cost $0.02 in 1920. How much is that worth in current dollars when taking inflation into account? How much is US postage stamp for first class mail in 1920 worth now adjusted for inflation? The price of a stamp was $0.02 in 1920.
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$0.02 from 1920 to 2024 adjusted for inflation. We use the Consumer Price Index provided by the Bureau of Labor Statistics. They aggregate prices over time to determine the CPI.
How much is 0.02 in 1920 worth in current dollars?
What was the rate of inflation since 1920 on 0.02?
How has the cost of living changed since 1920?
What was the value of $0.02 in 1920? Every year, the US dollar is usually worth less due to inflation. We calculate what $0.02 in 1920 is worth now.