DAR ES SALAAM, Nov 16 (Reuters) - The economy of mainland Tanzania grew at 4.7% in the first half of 2021, compared to 4.9% for the same period of 2020, the Bank of Tanzania said in a statement on Tuesday. Inflation remained within the target 3-5% and revenues “performed satisfactorily”, the east African country’s central bank said. (Reporting by Nuzulack Dausen; Writing by Ayenat Mersie; Editing by Jan Harvey)