(AREA) -- Michigan's dairy producers have approved a referendum to continue the Michigan Dairy Market Program for Grade A Milk. Established in January 1983, the Michigan Dairy Market Program was developed to promote the sale of milk and milk products produced within the State of Michigan. The program will continue for an additional 5-years beginning January 1, 2013. The current state program assessment is 10-cents per hundredweight of Michigan Grade A Milk. A total of 603 ballots were cast in the referendum. Of those, 549 producers voted yes, representing 89 percent of the production volume represented and 54 producers voted no representing 11 percent of the production volume represented. For renewal of the program and its activities, more than 50 percent of the voting producers, representing more than 50 percent of the pounds sold by those voting, must have voted yes.