Using 2006 as the base year, prepare a trend analysis of the following data, and tell whether the situation shown by the trends is favorable or unfavorable. (round your answers to one decimal place.) 2010 2009 2008 2007 2006 Net Sales 25,520 23,980 24,200 22,880 22,000 Cost of Goods Sold 17,220 15,400 15,540 14,700 14,000 General and Admin Exp 5,280 5,184 5,088 4,896 4,800 Operating Income 3,020 3,396 3,572 3,284 3,200