The travel and tourism sector in the United Kingdom contributed GBP66.3 billion to the gross domestic product (GDP), 3.4% of total GDP in 2016 and is expected to rise by 2.2% pa, from 2017 to 2027, to GBP84.6 billion, which could comprise up to 3.6% of the total GDP in 2027.[better source needed] In 2011, visitors to London spent £9.4 billion, which is a little more than half of the total amount international visitors spent in the whole of the United Kingdom the same year.A 2013 study by Deloitte and Oxford Economics concluded that the tourism sector employed 700,000 people, accounting for 11.6 per cent of London's GDP.