Worth noting though that for the world as a whole it did increase in 2021, from 72.6 to 72.8. I can't find exact confirmation of the numbers for all OECD countr

Worth noting though that for the world as a whole it did increase in 2021, from 72.6 to 72.8. I can't find exact confirmation of the numbers for all OECD countries* but it does appear it fell slightly from 2019 to 2020, that being the first year such had occurred for over 50 years (so much for the claim I saw on HN recently that Covid was a "nothingburger"). *) https://stat.link/gsdvzk https://stat.link/gsdvzk is one source but excludes Australia/NZ where we had no such fall (though macrotrends.net seems to contradict this for Australia, but I trust the official ABS stats more).