This week, two marijuana analysis and investment firms released a report noting that the industry is booming with the legal sales of cannabis growing to $5.4 billion in 2015, up from $4.6 billion in 2014, says a New York Times report.

With the two firms, The ArcView Group, based in San Francisco and New Frontier, based in Washington, project that the demand for marijuana will remain strong in 2016 with a forecast of $6.7 billion in legal sales.

And while the business of producing and selling marijuana still has a “stigma” around it with the products known to come in plastic baggies and grown in hidden locations, new lucrative legal side businesses, like climate systems for growers and marijuana bags have stemmed from the recent legalization.

Currently, 23 states already permit medical cannabis use, and four others — Florida, Ohio, Missouri and Pennsylvania — are positioned to advance medical laws