The Dow Jones Industrial Average reached a high of $ 7801.63 on December 29, 1997. Recall from Example 18.4 that it reached a high of $ 1003 on November 14, 1972. The Consumer Price Index for November 1972 was 42.4; for December 1997, it was 161.3. By what percentage did the high in the DJIA increase from November 14, 1972, to December 29, 1997, after adjusting for inflation?
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