Bluebulb Projects' The Measure of Things presents:
2,000 is about nine-tenths the number of Steps in the Sears Tower.
In other words, it's 0.94830 times the count of Steps in the Sears Tower, and the count of Steps in the Sears Tower is 1.055 times that amount.
(a.k.a. Willis Tower) (Chicago, Illinois) (steps per stairwell)