The economic impact of Harry Potter

From  the Economist: "The recession of 2008-09 has been accompanied by bold claims about businesses’ economic importance. As carmakers teetered many people put it about that one in ten American jobs depended on the industry. The figure turned out to include taxi drivers. Similarly adventurous claims have been made for telecoms and road-building. As a single-handed creator of jobs and wealth, though, few can match the writer Joanne Rowling."