BY RICK THOMPSON \n A new graphic from the Marijuana Business Daily illustrates the nation’s top five medical marijuana states, as measured by public participation. \n Created by Jennifer Mann, the graph compares states based on the number of people enrolled per one thousand residents of the state. \n California, the nation’s oldest medical marijuana program, ranks second with 19.30, followed by Oregon (17.9) and Washington State (16.5). Michigan ranked fifth with 12.3 medical marijuana patients per 1,000 residents. \n The US has 23 states with medical marijuana programs, not all of which are in effect yet. The Marijuana Business Daily chart considered only those states with medical marijuana programs in operation for more than one year. The national average for participation in all states qualifying for the chart was 10 patients per 1,000 residents. \n The participation level in the Great Lakes State may be lower than anticipated, considering the maturity of the program and the size of the state. Michigan’s medical marijuana program was instituted via public vote in 2008 and the state is 9th in population nationally.