of a more modern design. The creation of the Highlands and Islands Development Board and the discovery of substantial deposits of North Sea oil in 1965, the establishment of a unitary local authority for the islands in 1975 and more recently the renewables sector have all contributed to a degree of economic stability in recent decades. The Arnish yard has had a chequered history but has been a significant employer in both the oil and renewables industries. , the local authority, employs 2,000 people, making it the largest employer in the Outer Hebrides. See also the " area plan 2010" and the 's "Factfile – Economy". Economy Modern commercial activities centre on tourism, crofting, fishing, and weaving including the manufacture of Harris tweed. Crofting remains popular especially on Lewis and Harris (population 21,000) with over 920 active crofters according to a 2020 report: "with crofts ranging in size from as small as a single hectare to having access to thousands of hectares through the medium of community grazing". Crofters can apply for subsidy grants; some of these are intended to help them find other avenues to supplement their incomes. Some of the funding schemes available to crofters in the Hebrides include the "Basic Payment Scheme, the suckler beef support scheme, the upland sheep support scheme and the Less Favoured Area support scheme and the Crofting Agricultural Grant Scheme (CAGS), as of March 2020. According to the Scottish Government, "tourism is by far and away the mainstay industry" of the Outer Hebrides, "generating £65m in economic value for the islands, sustaining around 1000 jobs" The report adds that the "islands receive 219,000 visitors per year". 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. There is some optimism about the possibility of future developments in, for example, renewable energy generation,