Marijuana retailers sold $1.51 billion in 2017, according to records from the Colorado Department of Revenue.
The total includes both medical and recreational marijuana, according to KDVR News. Sales from adult recreational use totaled $1.09 billion while medical marijuana sales totaled $416.52 million.
The tax revenue collected on these sales was around $247 million.
Sales in 2016 totaled $1.3 billion.