The phrase "total turnover" means the complete amount of money or sales generated by a business within a certain period. It represents the sum of all the revenue earned from selling products or services during that time. Full definition
Legal Week «s recently published UK top 50 rankings revealed that the country's 50 largest firms brought in total turnover of # 18.24 bn during the last financial year, 5 % up on 2014 - 15. (legalweek.com)