Mexico barely registered a net population loss in the first quarter of 2011 due to emigration, with the loss last year being nearly six times lower than that in 2006, the National Statistics Institute said.

The figures provide evidence "of the significant reduction in emigration" of Mexicans, the agency said in a statement.

"For every 10,000 residents in Mexico" in the first quarter of 2011, there were "36 emigrants going abroad and 31 immigrants coming from another country," the government agency said.

International migration rates, which are calculated using National Employment Survey, or ENOE, figures, show that Mexico had "a nearly null net migration balance in relative terms, the agency said.

Mexico's population loss in the first quarter due to emigration was "marginal," amounting to just 5.8 people per 10,000 inhabitants, the statistics agency said.

Population loss in 2010 was just nine people per 10,000 inhabitants, or nearly six times lower than the rate registered in 2006, when it hit 53.2 per 10,000 inhabitants.

The figures are preliminary because the final "calculation requires new population projections that are not yet available from the National Population Council, or Conapo," the statistics agency said.

Emigration figures compiled by some private sector economic forecasters confirm the trend.

Nearly 650,000 people crossed the border into the United States in 2006, while just 200,000 entered that country last year, Spanish banking giant BBVA, whose Mexican unit has a research team that tracks migration, said.

The number of Mexican households receiving remittances from workers living abroad fell 27 percent between 2006 and 2010, the National Household Income and Spending Survey found.

The global economic crisis and the crackdowns on illegal immigrants in some U.S. states have reduced the flow of people from Mexico to the United States, experts say.