Shikongo, A., Shikongo, A., Kakujaha-Matundu, O. and Kaulihowa, T. 2019. Revenue Productivity of the Tax System in Namibia: Tax Buoyancy Estimation Approach. Journal of Economics and Behavioral Studies. 11, 2(J) (May 2019), 112-119. DOI:https://doi.org/10.22610/jebs.v11i2(J).2826.