equipment. One of the UK's most popular tourist destinations, Bristol was selected in 2009 as one of the world's top-ten cities by international travel publishers Dorling Kindersley in their Eyewitness guides for young adults. Bristol is one of the eight-largest regional English cities that make up the Core Cities Group, and is ranked as a Gamma level global city by the Globalization and World Cities Research Network, the fourth-highest-ranked English city. In 2017 Bristol's gross domestic product was £88.448billion. Its per capita GDP was £46,000 ($65,106, €57,794), which was some 65% above the national average, the third-highest of any English city (after London and Nottingham) and the sixth-highest of any city in the United Kingdom (behind London, Edinburgh, Glasgow, Belfast and Nottingham). According to the 2011 census, Bristol's unemployment rate (claiming Jobseeker's Allowance) was three per cent, compared with two per cent for South West England and the national average of four per cent. Although Bristol's economy no longer relies upon its port, which was moved to docks at Avonmouth during the 1870s and to the Royal Portbury Dock in 1977 as ship size increased, it is the largest importer of cars to the UK. Until 1991, the port was publicly owned; it is leased, with £330million invested and its annual tonnage increasing from 3.9million long tons (4million tonnes) to 11.8million (12million). Tobacco importing and cigarette manufacturing have ceased, but the importation of wine and spirits continues. The financial services sector employs 59,000 in the city, and 50 micro-electronics and silicon design companies employ about 5,000. In 1983 Hewlett-Packard opened its national research laboratory in Bristol. In 2014 the city was ranked seventh in the "top 10 UK destinations" by TripAdvisor. During the 20th century, Bristol's manufacturing activities expanded to include aircraft production at Filton by the Bristol Aeroplane Company and aircraft-engine manufacturing by Bristol Aero Engines (later Rolls-Royce) at Patchway. Bristol Aeroplane was known for their World War I Bristol Fighter and World War II Blenheim and Beaufighter planes. During the 1950s they were a major English manufacturer of civilian aircraft, known for the Freighter, Britannia and Brabazon. The company diversified into automobile manufacturing during the 1940s, producing hand-built, luxury Bristol Cars at their factory in Filton, and the Bristol Cars company was spun off in 1960. The city also gave its name to Bristol buses, which were manufactured in the city from 1908 to 1983: by Bristol Tramways