Seeing the market's operations staff of 10 roll out the power lines and delegate booth spaces with precision each weekend for so many years, most of the neighborhood has come to think of Portland Saturday Market (PSM) as a business like any other. The market moved to its current site under the Burnside Bridge in 1976, and started staying open on Sundays the following year. Things have changed a lot from the early days. PSM has over 400 members and generates an estimated $8 million in gross sales annually. It has become a central economic engine for the historic Old Town/Chinatown neighborhood, and attracts an estimated 750,000 visitors to this area each year.