TOKYO -- Japan is moving to incorporate the value of data in its gross domestic product based on new calculation standards by the United Nations, a move seen lifting the country's nominal GDP by around 14 trillion yen ($88.7 billion).
GDP, which represents the sum of value added by all producers, is the key metric for the size and growth of a country's economy. It often is used to guide economic policies, including consumer tax hikes, and inaccurate calculations can hinder policymaking.

