It's not that much of a mystery why people are turning to marijuana in waves recently. The medicinal and recreational uses of the plant are pretty much undisputed. But what is interesting is how marijuana users have been looked at throughout the years. Not too long ago, only hippies and stoners were known for smoking marijuana. Now, it's in the news everywhere you go, and the number of people using cannabis is only going up. It makes you wonder what the world will look like in another 50 years. But in the meantime, here's a fun little chart explaining what the population of marijuana users has been known for throughout history.