Average weekly direct and indirect costs of the partial shutdown, which began Dec. 22, currently add up to $1.2 billion, according to Beth Ann Bovino, S&P Global’s U.S. chief economist. Monday marked the start of the shutdown’s fifth week, and the closure will have caused roughly $6 billion in damage to the economy if the government does not reopen by the end of the week, Bovino estimated in a recent research note.

And the average weekly cost of the shutdown is expected to grow as the damage to industries and consumers both widens and deepens. “The longer this shutdown drags on, the more collateral damage the economy will suffer,” Bovino wrote.