The supply of corporate housing in the United States increased for the third consecutive year in 2015, growing 3.4 percent to 63,837 units, according to hospitality research firm The Highland Group. The greatest growth came in Detroit (62 percent), the Chicago Loop (56 percent) and Washington, D.C. (25 percent). The average daily rate increased 4.1 percent to $142.70, while occupancy fell 0.5 percentage points to 88.1 percent. The average length of stay fell from 96 nights to 84 nights, and revenue rose 7 percent to $2.9 billion. The Highland Group's Corporate Housing Industry Report 2016 summarizes 59 U.S. markets based on 80 North American company respondents.