Source: U.S. Census Bureau
Release: New Residential Sales
Data appearing as a "0" does not actually represent "0" units sold. Do to rounding issues "0" refers to less than 500 units sold.
U.S. Census Bureau and U.S. Department of Housing and Urban Development, New Houses Sold by Sales Price Between $750,000 and Over in Northeast Census Region [NHSSPNE75O], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/NHSSPNE75O, April 18, 2019.