References: Wappenhans, World Bank, 1992, Loan performance review (internal report); McNeill, H.W., & Belko, F., "Towards more effective Project Management", DAI, GBF, London, 2011, ISBN: 978-0-907833-02-4; SEEL-Systems Engineering Economics Lab, 2017, Estimated financial losses arising from lower than expected economic development project performance.
Recent studies on project successs rates indicate that in excess of 55% do not achieve objectives (PlanView). Overall something like 20-25% of projects are a complete failure and total financial loss. The other 30-35% have a range of losses from 5%-95% or an average of 50% of funding. This provides an estimated global financial loss equivalent to 37.5% total outlays on economic development funding. Latest fiures on aid funding can be obtained from OECD-Library website.
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