maybe 10% vacant? I know people with kids who got out pretty much the minute the schools closed. The very wealthy people I know split early too. But a lot of the older people I know stayed put because they figured that the building staff could be a lifeline of sorts...I suggested to one neighbor that maybe we should pare back our door staff (still paying them of course) because why should they risk their health to take packages? and the neighbor replied that he gets his medicines delivered from his online pharmacy.