The following table shows real GDP per hour of work in four imaginary countries in the years 2004 and 2014. By what percentage did labor productivity grow in each country? Is it true that productivity growth was highest where the initial level of productivity was the lowest? For which countries?

	Output per Hour
	2004	2014
Country A	$40	$48
Country B	25	35
Country C	2	3
Country D	0.50	0.60