The support for legalizing marijuana has grown rapidly over the last decade but the oldest Americans aren’t ready to sign off on it yet. Four states and Washington, D.C. have passed measures legalizing marijuana, and today 53 percent of Americans favor legalization and 44 are opposed. In 2006, those numbers stood at 32 percent in favor of legalization and 60 percent opposed, according to a survey from Pew Research Center.

The numbers have grown because of support among Baby Boomers, the group that came after them, Generation Xers, and the most recent generation, Millennials (those 18 to 34).

Some 68 percent of Millennials, 52 percent of Gen Xers and 50 percent of Baby Boomers, those 51 to 69, support legalization.

What’s holding the numbers back are those 70 to 87 who are known as the Silent Generation with only 29 percent favoring legalizing marijuana. [Read more at the Huffington Post]