<prompt> Translate the following text to EnglishKwa maelezo zaidi, tazama Laura M. Beall na Sean P. Kean, Fedha ya Bajeti ya Shirikisho, Mwaka wa Fedha wa 2001, Uchunguzi wa Biashara ya Sasa, Ofisi ya Uchambuzi wa Kiuchumi, Vol.  <response>: For more details, see Laura M. Beall and Sean P. Keehan, Federal Budget Estimates, Fiscal Year 2001, Survey of Current Business, Bureau of Economic Analysis, Vol. 80, No. 