WASHINGTON, D.C. -- As more U.S. states legalize marijuana use, 45% of Americans say they have tried marijuana at least once, a new high in Gallup's trend since 1969.

These results are from Gallup's July 5-9 poll on Americans' consumption habits.

When Gallup first asked this question in 1969, only 4% said they had tried marijuana. The rise in use over the past five decades has paralleled the increasing support for legalization -- last year, 60% said pot should be legal, a record high.

Eight states allow recreational marijuana use, and these states comprise one-fifth of the U.S. population.

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Art Swift ~ Gallup.com ~