Some of the larger islands have development trusts that support the local economy and, in striking contrast to the 19th and 20th century domination by absentee landlords, more than two thirds of the Western Isles population now lives on community-owned estates. However the economic position of the islands remains relatively precarious. The Western Isles, including Stornoway, are defined by Highlands and Islands Enterprise as an economically "Fragile Area" and they have an estimated trade deficit of some £163.4 million. Overall, the area is relatively reliant on primary industries and the public sector, and fishing and fish farming in particular are vulnerable to environmental impacts, changing market pressures, and European legislation.