According to Vgchartz
North America is at 1.63 Million Nintendo Switches sold
Europe is at 1.17 Million Nintendo Switches sold
Japan is at 0.90 Million Nintendo Switches sold
Seeing how Japan is constantly sold out completely, while small pockets in North America have a rare wild console on a shelf, and few places in Europe have a healthy few on shelves.
It is pretty close to constant global sellout. If Nintendo wanted total sellout they could squeeze Europe shipments a bit tighter to supply Japan eventually leaving Europe totally sold out.
Which might not be a bad idea because Japan needs those switches pretty hard...