This shows that the common stigma's that has plagued the world the last century in relation to marijuana is now finally changing. The same thing occurred during alcohol prohibition and we don't expect the ball to stop falling anytime soon. Look at the new states on this map that are now coming online with new programs for either full legalization or medical programs alike.
A couple of states that have decriminalized but are not mentioned on this map is Missouri and Georgia. This is usually the first path that a state takes to prepare to become a legally operating medical state.
Then there is Nevada and California that each voted to join the legal recreational small group of states with Nevada currently winning the race with their launch date of July 1, 2017 into the legal market.