According to the estimation of Gross Domestic Product (GDP) by provinces; İstanbul reached the highest GDP with 2 trillion 202 billion 156 million TRY for the year 2021 and gained 30.4% of total GDP. İstanbul was followed by Ankara with 667 billion 142 million TRY and 9.2% share and İzmir with login or sign up to read the complete news...