For almost a decade, despite significant increases in the money supply, CPI-measured price inflation remained “tame.” Between March 2011 and March 2021, the M-2 money supply (cash, checking accounts, and small savings) went from $8.94 trillion to $19.9 trillion, or a 222.5 percent increase. Just in 2020, M-2 expanded by nearly 25 percent.
Yet, despite this, the CPI only went up by a little less than 20 percent, from 223 to 266.8 (100 = 1982-1984) between 2011 and 2021. The annual rates of CPI price inflation for this ten-year period were mostly less than 2 percent. What is called “core” price inflation – the CPI minus energy and food prices – averaged each one of these ten years a bit higher most of the time, but not by much in this period. (See my article, “Dangerous Monetary Manipulations and Fiscal Follies”.)
But what, exactly, does the Consumer Price Index tell us? All price indexes, including the CPI, are statistical constructions created by economists and statisticians that, in fact, have very little to do with the actions and decisions of consumers and producers in the everyday affairs of market demand and supply. And they are certainly not accurate and precise guides for central bank monetary policy.
Overall versus “Core” Price Inflation
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