Here is something amusing.
"Arizona's export shipments of merchandise in 2009 totaled $14.0  billion.            
          The state's largest market was Mexico. Arizona posted  exports of $4.5            billion to Mexico, close to one-third (32 percent) of the  state's total            export shipments in 2009."
http://www.trade.gov/td/industry/ote...s/arizona.html