Infrastructure Economic Accounts, investment and net stock by asset, industry, and asset function

Infrastructure is the physical structures and systems that support the production of goods and services and their delivery to and consumption by governments, businesses and citizens. The industry undertaking that infrastructure investment is also presented. Accumulating investment flows over time produces an estimate of the stock of infrastructure assets. The perpetual inventory method is used as it estimates a value of the net stock of fixed assets in existence and in the hands of producers which is generally based on estimating how many of the fixed assets installed, as a result of investment undertaken in previous years, have survived to the current period. The depreciation of that stock is calculated using the geometric method with asset specific depreciation profiles.