NetJets Gulfstream Fleet: #1 Route?

Joe Nocera:

n a recent interview, Mr. Santulli of NetJets marveled at the vast wealth driving this growth. He also said that not all of the big long-range luxury jets, like Gulfstreams, are ferrying teams of executives across the seas.
“Take a wild guess. What do you think the most common city pair for our Gulfstream fleet is?” he asked.
“New York to L.A.?” I replied.
“Not even close. It’s New York to Washington, D.C.,” he said.