The graph shows changes in GDP in the United States from 2009 to 2011. A bar graph titled Annual growth in U S G D P has the year on the x-axis, from 2009 to 2011, and percentage on the y-axis, from negative 6 to positive 4 percent. The percentage of growth for the services producing sector in 2009 was negative 3 percent, in 2010 it was 2.3 percent, and in 2011 it was 2.1 percent. How did the contribution of the services sector to GDP change between 2009 and 2011? Answer is C ;)