According to Istat, in August 2011, the seasonally adjusted index of retail sales (current value that incorporates both the dynamics of the quantities and prices) has marked no change compared to July 2011. In the average of the quarter June to August 2011 the index fell by 0.4% over the previous three months. In comparison with July 2011, sales of food products increased by 0.3% and non-food products decreased by 0.1%. Compared to August 2010, the raw index of total sales marked a decline of 0.3%. Sales of food increased by 1.6%, while non-food products down by 1.2%. In comparison with the month of August 2010, the retail sales grow by 0.5%, those of companies operating in small surfaces have decreased by 0.9%. In the first eight months of 2011, compared to the same period of 2010, the raw index decreased by 0.7%. Sales of food products registered a rise of 0.1% and non-food products decreased by 1.0%.