As of 2013, the global advertising agencies of Omnicom Group and Interpublic Group, both based in Manhattan, had combined annual revenues of approximately US$21 billion, reflecting New York City's role as the top global center for the advertising industry, which is metonymously referred to as "<answer>Madison Avenue</answer>". The city's fashion industry provides approximately 180,000 employees with $11 billion in annual wages.
What is the popular name of New York's advertising industry?
Madison Avenue