Nearly two years after the nation’s first recreational marijuana shop opened in Colorado, American support for legal weed has tied an all-time high and is likely to increase, according to new numbers released today by Gallup. Fifty eight percent of Americans say that the use of marijuana should be legal, a seven-point year-over-year increase.

The poll finds steady increases in support of legalization across all age cohorts. For instance, in 1969 only 20 percent of those born between 1935 and 1950 supported making marijuana legal. Today, 40 percent of that age group — who are now age 65+ — support legal weed.

Similarly, in 1985 only 32 percent of Boomers born between 1951 and 1965 supported legal marijuana. Today, 58 percent of them do. Support is highest among young adults born between 1981 and 1997, 71 percent of whom support legalization, according to Gallup.

“Americans’ support for legalizing marijuana is the highest Gallup has measured to date, at 58%,” the survey concludes. “Given the patterns of support by age, that percentage should continue to grow in the future.” [Read more at The Washington Post]