New York City in the world at 103, including former Mayor Michael Bloomberg. New York also had the highest density of millionaires per capita among major U.S. cities in 2014, at 4.6% of residents. New York City is one of the relatively few American cities levying an income tax (currently about 3%) on its residents. New York is a global hub of business and commerce. The city is a major center for banking and finance, retailing, world trade, transportation, tourism, real estate, new media, traditional media, advertising, legal services, accountancy, insurance, theater, fashion, and the arts in the United States; while Silicon Alley,
Silicon Prairie park, which is located in Champaign. The National Center for Supercomputing Applications is in Urbana. The Chicago Metropolitan Area is home to several companies in the industrial automation, consumer electronics, telecommunications and online services industries. The Illinois Technology and Research Corridor along Interstate 88 and the Golden Corridor along Interstate 90 have particularly high concentrations of such businesses. Among the Chicago area companies and organizations that comprise the Illinois Silicon Prairie are: An area of the Midwestern United States is often referred to as the Silicon Prairie. This region can loosely be defined as the states bordering along Interstate 29