The number of homeless people in the nation’s capital has declined for the second year in a row, while remaining higher than it was five years ago, according to the results of an annual count released Tuesday. The survey, mandated by the federal government, found 6,904 homeless people in the District. The figure represented a 7.6 percent drop from 2017 and a 17.3 percent drop from 2016. It remains slightly higher than the homeless population of 6,865 in 2013. The District’s f