Net National Product (NNP) is an economic measure that reflects the total value of all goods and services produced by a country's residents, minus the depreciation of capital goods. It provides insight into the economic health of a nation by accounting for the wear and tear on physical assets, such as machinery and buildings, which are essential for production. NNP is an important indicator for policymakers and economists, as it helps assess the sustainability of economic growth. By focusing on net production, it highlights the actual increase in wealth available to a nation, considering the necessary investments to maintain its productive capacity.