USA Today:  “Nearly 24 million Americans, about 9.2% of the population, use illicit drugs, and marijuana use is steadily increasing. As the nation takes a softer stance on marijuana, more Americans are using the drug, the National Survey on Drug Use and Health found.  The nationwide survey made public Wednesday found that 7.3% of Americans 12 or older regularly used marijuana in 2012, up from 7% in 2011.”