Industrial activity, often little known in Monaco, is an area that has undergone considerable development over the past century. From 1906, when the state financed the construction of the first industrial platform in Fontvieille, industrial firms such as the Monaco Brewery and companies involved in flour milling and the manufacture of chocolate began to develop. Currently, the chemical-pharmaceutical-cosmetics manufacturing sector appears to be the most widespread, but companies working in the areas of plastic materials processing and the manufacture of electrical and electronic equipment are also present. Other sectors, while not on the same scale as these, are the manufactures of mechanical engineering, packaging, printing, and clothing. Since 1980, nearly 1,859 square meters (20,000 square feet) of new industrial floor-space has been built, mostly on areas reclaimed from the sea. The lack of space has led to the establishment of industrial premises in buildings that rise up to 13 floors. The government of the principality has adopted an industrial policy that operates in favor of the institution of enterprises having a high capital gain factor but that do not create any pollution. Industrial activity occupies about 4,000 members of the workforce. In 1993, they represented approximately 11.6 percent (excluding the construction and public works industry) of the total revenue in the principality.