According to Greenwald's research, drug use has decreased by 21.6% among the Portuguese population. Marijuana use decreased by 5% in just 5 years, while cocaine and ecstasy use decreased by 3%. (Greenwald, 2009) Crime rates decreased substantially, it is believed that because police officers were not as focused on drug related crimes, they began to focus on other crimes which helped reduce crime rates across the board. the line. A 2008 survey of drug use in the United States of America, completed alongside his research, showed that the United States has the highest level of illegal cocaine and cannabis use in the world. This adds to the argument that change is needed in the American pharmaceutical industry