(Washington Examiner) — Many population experts predict the District’s official demographic makeup, expected to be released by the Census Bureau this week, will show a marked increase in the city’s white population while blacks continue to decline. But some say that trend, largely driven by the real estate boom in the mid-2000s, may be slowing. In concert with the shift is the eastward movement of D.C.’s unofficial dividing line that separates the majority-white neighborhoods from the majority-black. That line 10 years ago used to roughly be along 16th Street Northwest, said Peter Tatian, senior research associate for the Urban Institute. Now it’s inching into Northeast D.C. as development and new housing have created emerging neighborhoods.