Business In Kingsport Continues To Lead In Growth. According To The Latest Monthly Sales Tax Report From The Sullivan County Budget Office, Sales Tax Revenue Within The Model City Accounted For Nearly 32-Thousand Dollars In Growth. Countywide The Total Increased Over Four Percent In February Compared To The Same Month A Year Ago. Sales Tax Revenues Are Generated When Money Is Spent On Goods And Services At Businesses Throughout The County And Its Cities.