Rounding out the top 10 are one each in Singapore, South Korea and the United Arab Emirates.
The West does not arise until No. 12 (Rotterdam, Netherlands). The U.S. first crops up at No. 18 (Los Angeles).
The only other U.S. ports in the top 50 are Long Beach (22) NY/New Jersey (23), Savannah (42) and Seattle (43). Even if you add all five of those U.S. ports, they fall short of both of the top two (Shanghai and Singapore).