A major credit rating says the ratable base for Atlantic City will be half of what it was in 2012 by next year. Moody’s released the report with the continued news of the Trump Taj Mahal possible closing. The report says that the resorts taxable base was $18 billion in 2012 and could be $9 billion according to their estimated by 2015. This year alone four casinos closed and a fifth is possible if the Taj Mahal doesn’t stay open. The unemployment rate was estimated in the city to be 16.9 percent back in Sept.