In the last 150 years, the Dutch have become the tallest people on Earth—and experts say they’re still getting bigger.

(According to John Komlos, a leading expert on the subject who is professor of economic history at the University of Munich in Germany, it was only in the 1950s that the Dutch passed the Americans, who stood tallest for most of the last 200 years. He added that many Dutch people are much taller than average. So many, in fact, that four years ago the government adjusted building codes to raise the standards for door frames and ceilings. Doors must now be 7′ 6 1/2″ high. No more “Duck or Grouse” then.)