there, requires little or no disclosure of information when doing business, and offers low taxes. "The most obvious use of offshore financial centers is to avoid taxes", The Economist added. Oxfam blamed tax havens in its 2016 annual report on income inequality for much of the widening gap between rich and poor. "Tax havens are at the core of a global system that allows large corporations and wealthy individuals to avoid paying their fair share," said Raymond C. Offenheiser, president of Oxfam America, "depriving governments, rich and poor, of the resources they need to provide vital public services and tackle rising inequality." International Monetary Fund (IMF) researchers estimated in July 2015 that profit shifting by multinational companies costs developing countries around US$213 billion a year, almost two percent of their national income. Igor Angelini, head of Europol's Financial Intelligence Group, said that shell companies "play an important role in large-scale money laundering activities" and that they are often a means to "transfer bribe money". Tax Justice Network concluded in a 2012 report that "designing commercial tax abuse schemes and turning a blind eye upon suspicious transactions have become an inherent part of the work of bankers and accountants". Money-laundering affects the first world as well, since a favored shell company investment is real estate in Europe and North America. London, Miami, New York, Paris, Vancouver and San Francisco have all been affected. The practice of parking assets in luxury real estate has been frequently cited as fueling skyrocketing housing prices in Miami, where the Miami Association of Realtors said that cash sales accounted for 90% of new home sales in 2015. "There is a huge amount of dirty money flowing into Miami that's disguised as investment," according to former congressional investigator Jack Blum. In Miami, 76% of condo owners pay cash, a practice considered a red flag for money-laundering. Real estate in London, where housing prices increased 50% from 2007 to 2016, also is frequently purchased by overseas investors. Donald Toon, head of Britain's National Crime Agency, said in 2015 that "the London property market has been skewed by laundered money. Prices are being artificially driven up by overseas criminals who want to sequester their assets here in the UK". Three quarters of Londoners under 35 cannot afford to buy a home. Andy Yan, an urban planning researcher and adjunct professor at the University of British Columbia, studied real estate