gabriel-zucman.eu/files/NPZ2017M…
If these PPP numbers are real, the UK before Thatcher was much more of an economic basket case than I realized, while the Soviet "miracle" was far less impressive.
As you can see, the British slowdown and recovery are still present but MUCH less pronounced. Also Soviet Russia does a lot better, and post-Soviet Russia does a lot worse.
Russia was a little richer than the overall USSR, and the U.S. a little richer than West Europe, so this overstates the gap a little,
cia.gov/library/readin…
Here are two papers on the subject:
1. academic.oup.com/qje/article-ab…
2. scholar.harvard.edu/files/weitzman…