Shown is the effect of CPI over time of the devaluation of a currency's purchasing power, namely the USD as it is the world reserve currency.

USD Loss of Purchasing Power

• Data sourced from here (U.S. city average, All items - CUUR0000SA0) on 28/08/2022 and downloadable in CSV format here
• Data points used are from a Year over Year change between the ratio of the average annual CPI value for a given year and the first stated CPI value.
• Mean YoY Change in Purchasing Power: -2.95%
• USD Value is down -96.61% since 1913

Average Annual CPI Increase Across All Countries

• Data sourced from here on 28/08/2022 and downloadable in CSV format here
• Data points used are from a Year over Year change between the ratio of the average annual CPI value for a given year and the first stated CPI value.
• Median: 6.76% YoY
• Mean: 21.47% YoY