Recreational marijuana shops in Massachusetts raked in more than $420 million in sales in the first full calendar year of legalization, according to new state data.

The data released this week by the state’s Cannabis Control Commission shows marijuana sales in December alone had topped $10.7 million even before Christmas.

Massachusetts imposes roughly 17 percent to 20 percent in taxes on marijuana, including a 6.25 percent sales tax, a 10.75 percent excise tax and an optional local tax of up to 3 percent.

Massachusetts became the first East Coast state with regulated recreational marijuana stores when two opened on Nov. 20, 2018.

The cannabis commission has previously reported that pot shops generated $394 million in gross sales from Nov. 20, 2018 to Nov. 20, 2019.

More than 30 marijuana retailers have been licensed to operate in the state, along with dozens of other businesses approved to cultivate, manufacture and test marijuana products. The industry is also generating significant real estate activity, from empty big-box retail buildings being converted to production facilities to large investments from specially organized investment firms.