Looking at the pdf, I'd like to note that even though we are going through an era of supertall construction, it is still restricted or limited in its nature. Only a few cities out there have such towers. Its still an achievement to get one.
I'd be interesting to see a global map with maybe dots showing the location of supertalls based on the city. You will see that most of it concentrates in a few select cities. Probably fewer than 40.
Edit: I found one
All Supertalls map!
*** https://www.google.com/maps/d/viewer...Y.kwtfhWNYxcr8 ***
1) The U.S. has 6 cities with supertalls. (will change with Miami making it 7 and possibly seattle, so 8).
2) Middle East has 7 cities with supertalls.
3) Europe has two cities with supertalls.
4) India has 2 cities .....
5) Australia has 1 ....
6) East Asia has too many and I'm lazy to count.
7) South America has 1 city.