…taking not averages but just the fastest building built every year (again taking out Pyongyang and Broad Group), regardless of country. This seems to indicate that with the exception of The Belcher’s tower(s) in HK and 60 Wall St, in general construction speed has remained stagnant for almost a century, and has actually declined since its peak in the Great Depression.
The early 1930s look pretty amazing. The data on meters built per year, and the fastest built buildings by that standard are interesting too:
There is much, much more in this post, which I consider to be one of the best things written this year. Here is Artir’s conclusion:
…the Empire State Building was an impressive achievement compared to the present, but it’s not true that the past has been better than the present; rather, the skyscrapers built during the Great Depression were.