increase in land under cultivation and a spectacular development of vineyards. The arrival in the early 20th century of phylloxera, a disease affecting vinifera grapes, was very harmful to Moguer's vineyards, but the industry has since recovered to a significant degree through the use of resistant rootstock. Moguer now belongs to Denominación de Origen (DO) Condado de Huelva. The loss of the vineyards was partially compensated by a growth in the chemical industry, but was only finally overcome with the cultivation of strawberries in recent decades, which has driven a new period of economic development and demographic growth. At the end of the 1970s the "Las Madres" estate of started growing Fragaria x ananassa—the garden strawberry—which spread rapidly through the municipality and the rest of the province. As noted above, Moguer is by far Spain's leading producer of strawberries. More recently, this has been supplemented by the cultivation of Rubus leucodermis (raspberries), and by a growth in construction, the service sector, and tourism. The construction sector has benefited from the growth in agriculture, which has impelled a sharp increase in the number of construction companies and real estate firms in the town, which now constitute 15 and 19 percent of non-agricultural economic activity, respectively. The commercial sector has also greatly benefited from the agricultural growth, now constituting 43 percent of non-farm economic activity. At the same time, recent development of the urban center of Mazagón for tourism has increased the number of hotels and other short-term accommodations to constitute 12 percent of the municipal economy. Also noteworthy is the presence in the municipality of the aerospace sector, due to the activity of the National Institute of Aerospace Technology (I.N.T.A) in its facilities at the El Arenosillo Experimentation Center (CEDEA). This headquarters of the I.N.T.A. develops its activity in the investigation of renewable energies, experimentation of newly developed rockets, carrying out scientific experiments with sounding rockets and balloons, atmospheric investigations, development tests of different types of unmanned aircraft (Drones), up to 150 kg., from the platform, and carrying out R&D programs, durability studies and testing of components and solar energy systems. CEDEA is expanding its facilities with the construction of the Center for Testing, Training and Assembly of Unmanned Aircraft (CEUS) 33, with the specific function of scientific tests, technological development, training and assembly of large unmanned aircraft (Drones). tonnage (up to 15 tons), both air, sea and land, with high