Does today's inflation path point to a renewed surge?
Core argument: In both the early-1970s and post-pandemic episodes, it took about three years from the onset of the inflation shock for price growth to be brought more or less under control, according to the analysis.
The starting point of this analysis is the striking correlation between the inflation surge of the early 1970s and the post-pandemic episode. The unsettling part is that we now find ourselves at almost exactly the same stage as when prices began to rise again in the late 1970s. If inflation continues to follow the path of inflation in the 1970s, as the post-pandemic inflation experience has done until now, a renewed inflation flare-up is to be expected. Figure 3 shows that the correlation between the early-1970s and early-2020s patterns of core inflation is equally strong as for headline inflation. We can now conclude that the inflation spike lasted for roughly the same duration in both periods. In each case, it took about three years from the onset of the inflation shock for price growth to be brought more or less under control. This was followed by a year and a half of relative stability — albeit with a brief uptick in early 1977 — before inflation flattened again. In the 1970s that calm persisted until early 1978, when inflation began to surge once more. The interesting point here is that we are now at the same stage in the inflation process as when prices reignited in the late 1970s




