Phoenix-based CompTronics manufactures audio speakers for desktop computers. The following data relate to the period just ended when the company produced and sold 44,000 speaker sets:

Sales	$	3,608,000
Variable costs		902,000
Fixed costs		2,310,000

Management is considering relocating its manufacturing facilities to northern Mexico to reduce costs. Variable costs are expected to average $18.00 per set; annual fixed costs are anticipated to be $1,986,000. (In the following requirements, ignore income taxes.)

If fixed costs remain constant, by how much must unit variable cost change? (Do not round intermediate calculations and round your final answer to 2 decimal places.)