| Total
          U.S.-Canadian border | 
        6,820,052 | 
       
        | Total
          top 5 gateways | 
        4,544,669 | 
       
| Detroit,
          MI | 
1,668,496 | 
       
| Buffalo-Niagara,
          NY | 
1,208,096 | 
       
| Port
          Huron, MI | 
907,291 | 
       
| Blaine,
          WA | 
409,786 | 
       
| Champlain-Rouses
          Point, NY | 
351,000 | 
       
        | 
      
        
       
        | Total U.S.-Canadian border | 
        6,606,307 | 
       
        | Total top 5 gateways | 
        4,397,004 | 
       
| Detroit, MI | 
1,588,769 | 
       
| Buffalo-Niagara, NY | 
1,162,950 | 
       
| Port Huron, MI | 
927,740 | 
       
| Champlain-Rouse Pt., NY | 
378,783 | 
       
| Blaine, WA | 
338,762 | 
       
        | 
      
        
       
        | Total U.S.-Canadian border | 
        6,775,388 | 
       
        | Total top 5 gateways | 
        4,520,932 | 
       
| Detroit, MI | 
1,638,062 | 
       
| Buffalo-Niagara, NY | 
1,175,884 | 
       
| Port Huron, MI | 
947,907 | 
       
| Champlain-Rouse Pt., NY | 
381,434 | 
       
| Blaine, WA | 
377,645 | 
       
        | 
      
        
       
        | Total U.S.-Canadian border | 
        6,775,444 | 
       
        | Total top 5 gateways | 
        4,472,799 | 
       
| Detroit, MI | 
1,678,177 | 
       
| Buffalo-Niagara, NY | 
1,142,274 | 
       
| Port Huron, MI | 
924,776 | 
       
| Champlain-Rouse Pt., NY | 
374,524 | 
       
| Blaine, WA | 
353,048 | 
       
        | 
      
        
       
        | Total U.S.-Canadian border | 
        6,669,623 | 
       
        | Total top 5 gateways | 
        4,412,181 | 
       
| Detroit, MI | 
1,715,969 | 
       
| Buffalo-Niagara, NY | 
1,118,120 | 
       
| Port Huron, MI | 
833,711 | 
       
| Champlain-Rouse Pt., NY | 
391,541 | 
       
| Blaine, WA | 
352,840 | 
       
        | 
      
        
       
        | Total U.S.-Canadian border | 
        6,365,752 | 
       
        | Total top 5 gateways | 
        4,306,192 | 
       
| Detroit, MI | 
1,725,426 | 
       
| Buffalo-Niagara, NY | 
1,088,469 | 
       
| Port Huron, MI | 
770,282 | 
       
| Champlain-Rouse Pt., NY | 
366,059 | 
       
| Blaine, WA | 
355,956 | 
       
        | 
      
        
       
        | Total U.S.-Canadian border | 
        5,782,214 | 
       
        | Total top 5 gateways | 
        3,827,225 | 
       
| Detroit, MI | 
1,482,250 | 
       
| Buffalo-Niagara, NY | 
981,329 | 
       
| Port Huron, MI | 
732,493 | 
       
| Champlain-Rouse Pt., NY | 
356,844 | 
       
| Blaine, WA | 
274,309 | 
       
        | 
      
        
       
        | Total
          U.S.-Canadian border | 
        4,954,442 | 
       
        | Total
          top 5 gateways | 
        3,227,155 | 
       
| Detroit,
          MI | 
1,153,887 | 
       
| Buffalo-Niagara,
          NY | 
845,627 | 
       
| Port
          Huron, MI | 
623,549 | 
       
| Blaine, WA | 
310,962 | 
       
| Champlain-Rouse
          Pt., NY | 
293,130 | 
       
        | 
  
      
        
       
        | Total
          U.S.-Canadian border | 
        1,824,976 | 
       
        | Total
          top 5 gateways | 
        1,305,446 | 
       
| Port
          Huron, MI | 
424,635 | 
       
| Detroit,
          MI | 
293,300 | 
       
| International
          Falls, MN | 
238,515 | 
       
| Portal,
          ND | 
199,637 | 
       
| Buffalo-Niagara,
          NY | 
149,359 | 
       
        | 
      
        
       
        | Total U.S.-Canadian border | 
        1,868,245 | 
       
        | Total top 5 gateways | 
        1,333,244 | 
       
| Port Huron, MI | 
458,551 | 
       
| Detroit, MI | 
254,688 | 
       
| International Falls, MN | 
252,699 | 
       
| Portal, ND | 
217,390 | 
       
| Buffalo-Niagara, NY | 
149,916 | 
       
        | 
      
        
       
        | Total U.S.-Canadian border | 
        1,950,909 | 
       
        | Total top 5 gateways | 
        1,346,724 | 
       
| Port Huron, MI | 
474,175 | 
       
| International Falls, MN | 
259,165 | 
       
| Detroit, MI | 
234,823 | 
       
| Portal, ND | 
224,896 | 
       
| Buffalo-Niagara, NY | 
153,665 | 
       
        | 
      
        
       
        | Total U.S.-Canadian border | 
        1,940,557 | 
       
        | Total top 5 gateways | 
        1,325,479 | 
       
| Port Huron, MI | 
457,275 | 
       
| International Falls, MN | 
251,118 | 
       
| Portal, ND | 
231,832 | 
       
| Detroit, MI | 
231,482 | 
       
| Buffalo-Niagara, NY | 
153,772 | 
       
        | 
      
        
       
        | Total U.S.-Canadian border | 
        1,923,787 | 
       
        | Total top 5 gateways | 
        1,333,105 | 
       
| Port Huron, MI | 
445,269 | 
       
| International Falls, MN | 
282,784 | 
       
| Portal, ND | 
244,988 | 
       
| Detroit, MI | 
218,963 | 
       
| Buffalo-Niagara, NY | 
141,101 | 
       
        | 
      
        
       
        | Total U.S.-Canadian border | 
        1,939,876 | 
       
        | Total top 5 gateways | 
        1,347,207 | 
       
| Port Huron, MI | 
466,569 | 
       
| International Falls, MN | 
290,852 | 
       
| Portal, ND | 
242,220 | 
       
| Detroit, MI | 
213,777 | 
       
| Buffalo-Niagara, NY | 
133,789 | 
       
        | 
      
        
       
        | Total U.S.-Canadian border | 
        1,898,581 | 
       
        | Total top 5 gateways | 
        1,329,412 | 
       
| Port Huron, MI | 
426,661 | 
       
| International Falls, MN | 
335,442 | 
       
| Portal, ND | 
235,589 | 
       
| Detroit, MI | 
210,255 | 
       
| Buffalo-Niagara, NY | 
121,465 | 
       
        | 
      
        
       
        | Total
          U.S.-Canadian border | 
        1,553,416 | 
       
        | Total
          top 5 gateways | 
        1,115,410 | 
       
| Port
          Huron, MI | 
369,321 | 
       
| International
          Falls, MN | 
295,171 | 
       
| Portal,
          ND | 
194,884 | 
       
| Detroit,
          MI | 
155,283 | 
       
| Buffalo-Niagara,
          NY | 
100,751 | 
       
        |