Trade using surface transportation between the United States and its North American Free Trade Agreement (NAFTA) partners, Canada and Mexico, was 8.3 percent higher in May than in May 2011, totaling $83.8 billion, according to the Bureau of Transportation Statistics (BTS) of the U.S. Department of Transportation.
Adjusted for inflation and exchange rates, the May total was $60.7 billion in 2004 dollars, up 11.7 percent from the year before.
Texas continued to lead all states in surface trade with Mexico at $12.9 billion, a 15.6 percent increase from May 2011, according to The Trucker. This amount is the highest on record, surpassing the $12.6 billion in Texas- Mexico trade in March.
In May, Michigan led all states in surface trade with Canada, at $6.5 billion, a 2.6 percent increase from May 2011. Of the top 10 states by value, California had the largest percentage increase over May 2011, at 29.7 percent.
U.S.-Mexico trade reached $35.6 billion, a 14.9 percent increase.