By 1997, over 1,700,000 dwellings in the UK had been sold under the scheme since its introduction in 1980, with the scheme being cited as one of the major factors in the drastic reduction in the amount of social housing in the UK, which has fallen from nearly 6.5 million units in 1979 to roughly 2 million units in 2017, while also being credited as the main driver of the 15% rise in home ownership, which rose from 55% of householders in 1979 to a peak of 71% in 2003; this figure has declined in England since the late 2000s to 63% in 2017.The Labour Party initially proposed the idea of the right of tenants to own the house they live in, in their manifesto for the 1959 general election, which they lost.He said the right to buy had two main objectives: to give people what they wanted and to reverse the trend of ever-increasing dominance of the state over the life of the individual.[17] Sales were restricted to general-needs housing; adapted properties and those built specifically for older people were exempted from the scheme.The effect was to reduce the council housing stock, especially in areas where property prices were high, such as London and the south-east of England.[19] The Labour Party was initially against the sales and pledged to oppose them at the 1983 general election but dropped its official opposition to the scheme in 1985.[21] When Labour returned to power at the 1997 general election, it reduced the discount available to tenants in local authorities which had severe pressure on their housing stock; this included almost the whole of London.Five years' tenancy was now required for new tenants to qualify, and properties purchased after January 2005 could no longer immediately be placed on the open market should the owner decide to sell.In 2009, the Localis think tank suggested, as part of a review of principles for social housing reform, that the right to buy should be extended into equity slivers, which could be part-earned through being a good tenant.