MEXICO CITY – Mexico’s law enforcement agencies have seized cocaine, marijuana and heroin worth a total of $10.9 billion since 2006, removing 50.24 billion doses of illegal drugs from the market, Attorney General Arturo Chavez Chavez said.

The AG released the figures Wednesday during a ceremony marking the 4th anniversary of President Felipe Calderon’s inauguration.

Between 300 and 400 tons of cocaine from South America pass through Mexico each year bound for the United States, according to estimates from various experts, while Mexico produces about 7,000 tons of marijuana annually.

More than 82,450 convictions have been obtained in drug cases in the past four years, Chavez said.

Mexico has extradited 385 people to the United States, an “unprecedented figure,” the attorney general said.

Washington has reciprocated by handing over 90 Mexicans arrested abroad, Chavez said.

Officials have paid out three rewards this year totaling 4.3 million pesos ($358,000), the attorney general said, but he did not provide details on the cases.

The Attorney General’s Office has a program that hands out rewards to individuals providing information that leads to the arrest of drug capos and other dangerous criminals.

Nearly 30,000 people have died in drug-related violence since Calderon declared war on Mexico’s cartels shortly after taking office four years ago.

The Mexico City daily Reforma reported recently that gangland killings have topped 10,000 this year.

Calderon has deployed tens of thousands of soldiers and Federal Police officers across the country to combat drug cartels and other criminal organizations.

The anti-drug operation, however, has failed to put a dent in the violence. EFE