Here is some data on US import/export activity:
Exports
Machines, engines, pumps: US$205.8 billion (13.7% of total exports)
Electronic equipment: $169.8 billion (11.3%)
Aircraft, spacecraft: $131.1 billion (8.7%)
Vehicles: $127.1 billion (8.4%)
Oil: $106.1 billion (7.1%)
Medical...