The number of Americans who support the legalization of marijuana has reached a record high of 50 percent, according toGallup's latest annual crime survey.

Fifty percent of U.S. adults surveyed Oct. 6-9 expressed support for the legalization of marijuana and 46 percent opposed it—the first time the percentage of supporters outweighed those opposed since Gallup began surveying the topic of legalization in 1969. Since 1969, when 12 percent supported legalization, the percentage of supporters has been steadily increasing,

The legalization of recreational marijuana was approved in Washington and Colorado on Nov. 6.

As expected, the youngest adults surveyed, liberals, Democrats and independents were all more likely to favor legalization than their counterparts. The margin of error was plus or minus 4 percentage points for all samples.

Read more: Yahoo! News