| Canada | United States | Mexico | China |
| Exports 2001 | 81.49 | 0.51 | 1.2 |
| Exports 2012 | 63.31 | 2.52 | 3.97 |
| Imports 2001 | 50.42 | 6.53 | 5.45 |
| Imports 2012 | 27 | 11.31 | 35.34 |
| Mexico | United States | Canada | China |
| Exports 2001 | 91.2 | 1.3 | 0.7 |
| Exports 2011 | 84.4 | 3.9 | 0.7 |
| Imports 2001 | 57.4 | 0.8 | 4.6 |
| Imports 2011 | 14.2 | 0.6 | 43.7 |
| United States | Mexico | Canada | China |
| Exports 2001 | 13.6 | 14.2 | 7 |
| Exports 2011 | 21 | 14.2 | 11.6 |
| Imports 2001 | 15.6 | 5.4 | 13.4 |
| Imports 2011 | 15 | 1.7 | 49.5 |