are great many non-regular employees working in agriculture, such as seasonal workers and contractors, we count that figure among the full-time workers. Flemish agriculture and horticulture employs 41,141 full-time workers, or on average 1.65 per business. 34% of the full-time workers work in livestock businesses (dairy, pork, beef and poultry) 32% in horticultural businesses, 13% in arable crops businesses and 19% in mixed businesses. In 2012, the gross value added of the primary sector (including forestry and fishery) had a 0.9% share in the total Flemish gross value added. In the European Union the average share is 1.7%. In 2013, the total Belgian trade in agricultural products recorded a positive trade balance. Export is good for 39.4 billion euros, while import amounts to 34.5 billion euros. Some important export products are chocolate products (2.1 billion euros), potato preparations and pork (each 1.4 billion), beer and frozen vegetables (each 1.1 billion). Belgium has an 8% share of total agricultural exports from the EU-28 and thus holds the fifth place in the EU ranking, after Germany, the Netherlands, France and Spain. Flanders takes in account 80% of the Belgian agricultural exports. Regional distribution The importance of the agricultural sector in Flanders depends on the region. Aclassification of municipalities with similar agricultural activity shows the typical regions: fruit around Sint-Truiden and vegetables around Sint-Katelijne-Waver, Roeselare and Hoogstraten. Ornamental horticulture is practiced around Ghent. Pig breeding makes its home in West Flanders, Meetjesland, Waasland and the Campine. Dairy cattle is important in the Flemish Ardennes and Pajottenland, and in combination with breeding in the Campine. Cattle are primarily found in the region around Bruges, the southern parts of West and East Flanders and in combination with arable farming in Flemish Brabant and South Limburg. The explanation for this variation is found in history and in factors of soil physics. Breeding farms have installed themselves in the immediate vicinity of the mixed feed industry and the slaughterhouses. Vegetable and fruit cultivation is concentrated around the auction and its derivative industry. Arable farming primarily occurs on rich soils and cattle breeding on poorer soils. Agriculture and environment To get an idea of the eco-efficiency of Flemish agriculture we compare pressure indicators to an economic indicator. In the period 2007-2012 the final production remains more or less stable, while the environmental indicators evolve. As to the emission of very fine particles, the phosphorus fertilizer use and the