With the recent legalization of recreational marijuana in Canada, many are wondering when the United States of America will follow in their northern neighbors' footsteps. And according to a few experts, we only have to wait a few more years.

Researchers at the University of Colorado, Boulder, and the Santa Fe Institute recently attempted to predict when marijuana legalization will occur throughout the United States. The researchers looked at 170 other laws and policies that started as state level initiatives, like marijuana has, and eventually became law at the national level. Their analysis wasn't simply about marijuana legalization, but rather about any policy that begins at the state level.

So when will the U.S. legalize marijuana? 2021. Maybe. It's complicated.

You see there are different trajectories the researchers created based on past information as well as the current rate of legalization. If you look at the data taken from the first five states to legalize recreational marijuana, then the researchers predict the whole country should legalize cannabis by 2021. But when they looked at the data for the first nine states that legalized marijuana, they then predicted that legalization wouldn't occur until 2023. 

The researchers at the end concluded that there's a strong likelihood that marijuana will be legalized in the United States by the end of 2022. They also said the idea that it will occur after 2028 is unlikely, with less than a 30 percent chance.

So you'll have to wait four to 10 years. Very reassuring.

(h/t Marijuana Moment)