Capital accumulation and resources depletion - a Hartwick rule counterfactual

How rich would resource-abundant countries be if they had actually followed the Hartwick Rule (invest resource rents in other assets) over the past 30 years? The authors use time series data on investments and rents onexhaustible resource extraction for 70 countries to answer this question. The results are striking: Gabon, Trinidad and Tobago, and Venezuela would all be as wealthy as the Republic of Korea, while Nigeria would be five times as well off as it is currently. The authors also derive a more general rule for sustainability-maintain positive constant genuine investment-and use this to draw further empirical results.