1870-3550 1870-3550 S1870-35502021000200375 10.22201/cisan.24487228e.2021.2.478 00 12 2021 00 12 2021 16 2 375 402

2008 78-101 1979 69 1 1 106-16 2018 62 2 2 329-40 2001 53 1 1 1-27 1994 1990 100 4 4 1216-29 1985 67 3 3 474-81 Bureau of Transportation Statistics 2001 5 1 1 125-44 2010 1998 7-22 2014 1977 67 3 3 297-308 1995 38 1-24 2009 4 1 1 21-42 1997 2019 2011 1985 I 2002 2017 17-22 IPC 2019 1980 70 5 5 950-9 1979 9 4 4 469-79 2012 424-38 2018 9 5 5 1962 United Nations U.S. Census Bureau U.S. Census Bureau U.S. customs and border protection 1992 United states trade Representative 2018 2014 2010 33 5 5 710-45 2018 17-35 World Trade Organization