new york city's most biggest economic part is the u.s. financial industry, also known as "wall street". the city's securities industry, which has 163,400 jobs in august 2013, continues to be the biggest part of the city's financial sector and an important economic part. in 2012, walls street made 5.0 percent of the city's private sector jobs, 8.5 percent ($3.8 billion) of its tax revenue, and 22 percent of the city's total wages, including an average salary of $360,700.