A total of 101,199 murders were registered in Mexico during President Felipe Calderon's six-year administration, with about 50 percent of the killings drug-related, a report released Tuesday by the Mexico Evalua think tank says.

Homicides rose 37 percent from December 2006, when Calderon took office, to October 2012.

A total of 74,586 homicides were registered during the 2000-2006 administration of President Vicente Fox, the public policy research center said.

Mexico Evalua used National Institute of Statistics and Geography, or INEGI, and National Public Safety System Executive Secretariat, or SESNSP, data in preparing the report.

The increase in homicides, according to the report, is related to organized crime, with the proportion of murders linked to "criminal rivalries" at just 30 percent before 2008.

Today, that figure is around 50 percent, with some states, especially in northern Mexico, seeing 80 percent of murders linked to drug trafficking.

The study's authors, however, said there was insufficient evidence to link the spike in murders to Calderon's strategy of militarizing the war on drugs.

More than 50,000 people have died in shootouts involving rival drug traffickers or pitting narcos against the security forces.

"Obviously, we were not successful in reducing the violence. If we indeed lacked evidence to blame these deaths on the strategy (to fight drug trafficking), what we can say is that what was done was not sufficient to reduce the violence," Mexico Evalua director Edna Jaime said.

Mexico experienced a bigger spike in violence between 2007 and 2010 than any other country in the world, with the homicide rate surging 29.3 percent, the report said, citing U.N. Office on Drugs and Crime figures.

Both the killers and victims in Mexico tend to be people who live "in precarious conditions," the report said.

Mexico Evalua recommends that Enrique Peña Nieto, who will be sworn in as Mexico's next president on Saturday, should make reducing the violence, protecting citizens and giving victims access to the justice system priorities.

"We had an episode of brutal violence, the violence did not grow in any country like it did in Mexico and this has consequences, and it is very important to recognize it" or "the cycles of violence will be regenerated," Jaime said. EFE