387 - Water, air & space transportation 741
382 - International commerce 423
380 - Commerce, communications & transportation 189
388 - Transportation; ground transportation 181
384 - Communications; telecommunication 96
381 - Commerce 51
385 - Railroad transportation 30
383 - Postal communication 5
386 - Inland waterway & ferry transportation 5
389 - Metrology & standardization 5