textiles, industrial machinery, electrical and electronic equipment, metallurgic products, raw materials, military equipment, pharmaceuticals, fine chemicals, and agricultural products (fruits, vegetables, and flowers). Trade is mostly centred on the member states of the European Union, with Germany and Italy being the country's single largest trading partners. The account balance in 2012 was estimated to be 4.52% of GDP. After a series of privatizations and reforms in the late 1990s and 2000s, government intervention in the Romanian economy is somewhat less than in other European economies. In 2005, the government replaced Romania's progressive tax system with a flat tax of 16% for both personal income and corporate profit, among the lowest rates in the European Union. The economy is based predominantly on services, which account for 56.2% of the country's total GDP as of 2017, with industry and agriculture accounting for 30% and 4.4% respectively. Approximately 25.8% of the Romanian workforce is employed in agriculture, one of the highest rates in Europe. Romania has attracted increasing amounts of foreign investment following the end of Communism, with the stock of foreign direct investment (FDI) in Romania rising to €83.8 billion in June 2019. Romania's FDI outward stock (an external or foreign business either investing in or purchasing the stock of a local economy) amounted to $745 million in December 2018, the lowest value among the 28 EU member states. Some companies that have invested in Romania include Coca-Cola, McDonald's, Pizza Hut, Procter & Gamble, Citibank, and IBM. According to a 2019 World Bank report, Romania ranks 52nd out of 190 economies in the ease of doing business, one place higher than neighbouring Hungary and one place lower than Italy. The report praised the consistent enforcement of contracts and access to credit in the country, while noting difficulties in access to electricity and dealing with construction permits. Since 1867 the official currency has been the Romanian leu ("lion") and following a denomination in 2005. After joining the EU in 2007, Romania is expected to adopt the Euro in 2024. In January 2020, Romania's external debt was reported to be US$122 billion according to CEIC data. Infrastructure According to the Romania's National Institute of Statistics (INSSE), Romania's total road network was estimated in 2015 at . The World Bank estimates the railway network at of track, the fourth-largest railroad network in Europe. Romania's rail transport experienced a dramatic decline after 1989 and was estimated