Bluebulb Projects' The Measure of Things presents:
43 is about one-third the number of Union Stations in the United States
In other words, it's 0.3190 times the count of Union Stations in the United States, and the count of Union Stations in the United States is 3.130 times that amount.
(a.k.a. Union Terminal; a.k.a. Joint Station; a.k.a. Union Depot) (2016 figures)