answers: 1974
context: is also shielded from prosecution if it is based solely on another occupant of the vehicle having an open container. This law only considers certain parts of a vehicle to be the "passenger area," and excludes locked glove compartment, trunks, and the area behind the rear-most seats if the vehicle has no trunk (such as those commonly found in vans and SUVs). Like underage possession above, violation of the open container law is a civil offense. In July 2011, Maryland's taxation of alcohol was increased for the first time since the 1970s, from 6 percent to 9 percent. The tax </s> constitution has been amended approximately 115 times, , the Maryland Constitution has been amended almost 200 times, most recently in 2012. In 1910, the Digges Amendment was proposed, to increase property requirements for voter registration. It would have effectively disfranchised most African Americans and many poor whites (including recent European immigrants), as had been accomplished by other states through various means, beginning with Mississippi's new constitution of 1890. Other Maryland laws had already reduced black voter rolls, but this amendment was rejected by voters at the general election. In 1970, voters approved an amendment that created the office of the </s> is applied at the consumer level, appearing as a line-item on the customer's receipt. Prior to 1973, the minimum age to buy or possess alcoholic beverages was 21 years old. In 1973, the minimum age was decreased to 18 years old in Montgomery County and Prince George's County. In 1974, the minimum age was decreased to 18 years old for the entire state. In 1982, the minimum age was increased to 21 years old but with a grandfather clause which allowed those who had already turned 18 (born June 30, 1964 or earlier) to consume beer and wine. Alcohol laws
question: when did maryland change drinking age to 18