Bermuda enjoys one of the highest per capita incomes in the world, with its economy primarily based on providing financial services for international business and luxury facilities for tourists. The effects of 11 September 2001 have had both positive and negative ramifications for Bermuda. On the positive side, a number of new reinsurance companies have located on the island, contributing to the expansion of an already robust international business sector. On the negative side, Bermuda's already weakening tourism industry - which derives over 80% of its visitors from the US - has been further hit as American tourists have chosen not to travel. Most capital equipment and food must be imported, with the US serving as the primary source of goods, followed by the UK. Bermuda's industrial sector is small, although construction continues to be important. Agriculture is limited, only 6% of the land being arable.