Upon the request of the City Supervisor, a 2012 analysis reviewing trends in employment and sales of nightlife industries in San Francisco was updated in 2016 with new statistics. The study defined nightlife businesses as art galleries, nightclubs, music venues, theaters, restaurants (full and limited-service), and drinking establishments. The studies were primarily based around a survey of nightlife patrons and business owners conducted in 2012. The updated 2016 study also assessed the General Fund Sales taxes and Business taxes generated by the nightlife economy.