New Yorkers are fleeing the state and city in alarming numbers -- and costing a fortune in lost tax dollars, a new study shows. More than 1.5 million state residents left for other parts of the United States from 2000 to 2008, according to the report from the Empire Center for New York State Policy. It was the biggest out-of-state migration in the country. The vast majority of the migrants, 1.1 million, were former residents of New York City -- meaning one out of seven city taxpayers moved out. "The Empire State is being drained of an invaluable resource --...