But there is a major difference between these two time frames.

FORBES: This Is Not 1987

Over that same period of study, the difference between the best- and worst-performing sector was over 200%, so the year-to-year difference between sector performances is magnified over longer time frames.

FORBES: Sector Investing Much Smarter Than Trying To Guess What's Growth And Value

We chose to look at the period between 1970 and 1980 and then again between 2002 and 2012, because these time frames both had big deficits and loose monetary policy, and they straddle the time in which the most significant changes to the CPI methodology took effect.

FORBES: Doubting The Big Lie That Inflation Is Not A Threat