The music industry in Britain has seen significant changes over the past two decades. Recording artists now rely primarily on live performances and merchandise for income rather than recorded music sales. Record companies have introduced "360 deals" where they take a percentage of artists' revenues from all sources in order to benefit from their entire income stream. While digital singles sales are rising, digital and physical album sales continue to decline in the UK due to high levels of illegal downloading. More than three-quarters of downloaded music in Britain is obtained illegally, costing the music industry over £1 billion since 2007.