Over the last 10 years, American commercial exports have totaled $300 million to $2.5 billion a year.
American exports to Iran last year totaled only $34 million.
Japan's global exports in April totaled $21.87 billion, down 5.8 percent from a year earlier.
The auto sector expects exports to total $7.5 billion this year.
In June, exports totaled 507,868 units, a 16.6 percent fall from a year earlier.
Exports from Israel, which once dominated the market, totaled $2.5 billion.
Israel's high-tech and other exports to Mexico in 1999 totaled $130 million.
Last year, exports totaled 1.1 million tons, the highest level since 1983.
Exports in March totaled $29.7 billion, a strong increase from the $26.03 billion a year earlier.
In 2005, international exports from Oklahoma's manufacturing industry totaled $4.3 billion, accounting for 3.6 percent of its economic impact.