Rind, O. bSolomina/b, R. Villalba, and D. Zhang, 2007: Palaeoclimate. In: Climate. 1535. Change 2007: The Physical Science Basis. Contribution of Working Group I to. 1536 the Fourth Assessment Report of the Intergovernmental Panel on Climate b....../b total) and 1.0 million building permits were issued for multi-family housing units. 7200. (51 percent of the U.S. total) (Crossett et al., 2004). 7201. ? In 2000, there were approximately 2.1 million seasonal or bvacation/b homes in ...