Since it's election season and since the post immediately below,Solar Speculators May Have Dissapointment and Sorrow Coming Their Way (TAN)" mentions changes in the rate of increase this is probably as good a place as any for this odd little tidbit.
From the incomparable Fermat's Library:
In the fall of 1972, President Nixon announced that "the rate of increase of inflation was decreasing". Probably the first time a sitting president used the 3rd derivative to increase the chances of reelection. pic.twitter.com/mhnd1LxOCJ
— Fermat's Library (@fermatslibrary) September 21, 2019