The economy of Aruba is an open system, with tourism currently providing the largest percentage of the country's income. Tourism is the mainstay of Aruban economy. The rapid growth of the tourism sector over the last decade has resulted in a substantial expansion of other sectors industries like construction have also flourished. Other primary industries include oil refining and storage, as well as offshore banking. With such a large part of its economy dependent on tourism, the Aruban government is striving to increase business in other sectors to protect against possible industry slumps. Their current focus is on expanding technology, finance, and communications.