The months of supply remained one of the tightest in the Elliman report series nationwide as chronically low listing inventory levels restrained sales levels. There were 642 listings at the end of the quarter, up 14.2% from the prior-year quarter for the sixth straight quarterly rise. The number of sales declined by 12.5% to 846 over the same period and was the fourth consecutive quarterly decline. More than half the sales were sold within thirty days, and nearly…