<prompt> Translate the following text to EnglishKwa maelezo zaidi kuhusu vyanzo vya kutokuwa na uhakika katika makadirio ya CBO, angalia The Uncertainties of Budget Projections, sura ya 5, The Budget and Economic Fiscal Years 2002-2011, Congressional Budget Office January 2001, pp. 93-103.  <response>: 16For more information about potential sources of uncertainty in CBOs projections, see The Uncertainties of Budget Projections, Chapter 5, The Budget and Economic Fiscal Years 2002-2011, Congressional Budget Office January 2001, pp. 93-103. 