||This chart compares the value of the German mark with that of the dollar between 1914 and November 1923. As it took more and more marks to equal a dollar, the purchasing power of each mark plummeted. You can see how this inflation began after World War I and then skyrocketed in 1923. German currency became virtually useless; people needed whole suitcases full of money to pay even small debts. Finally in November the government stabilized the currency at the rate of one trillion old marks to one new one.