The national total was about $3.04 billion, down from $3.17 billion a year earlier.
Since 1995, 138 area codes have been added around the country, raising the national total to 344.
In 1996 the North had 11.1 million inhabitants, only 7% of the national total.
Both figures were about 30 percent of the national totals, city officials said.
They also carried nearly 1.1 billion passengers, 20 percent of the national total.
The number does not reflect the national total, which is growing every year, she said.
Migration to foreign countries was up to 28.3% of the national total.
However, it was reduced to a single seat, after seeing its vote share fall to just 2.1% of the national total.
Mexico's trade with Japan amounted to $3.2 billion, or less than 5 percent of the national total.
There are only 57 farms compared to the national total of 120,699.