Detailed Instructions: Classify the given a piece of financial news into three classes: positive, negative, and neutral. Output must be 'positive', 'negative', or 'neutral'.
Q: Kesko Agro Eesti , the retailer and wholesaler of grain , agricultural and warehousing machinery and accessories , had net sales of 81 million euros in 2007 , an increase by one-tenth over the preceding year .
A:
positive