The yield factor is a provision for the normal loss that occurs in a process. In manufacturing industries, the yield factor considers normal evaporation losses, residuals, and other losses that occur during the production process. In service industries, the yield factor may encompass an allowance for fatigue and normal equipment breakdowns that are expected to occur during the delivery of the service. The yield factor is expressed as a percent of the maximum or theoretical output that can be obtained from a process. Yield Factor means, initially, 1.5%, and shall increase to 1.75% during any Accumulation Period; provided, that the Yield Factor shall increase to 2% with respect to the Series 1999-1 and Series 2000-1 Certificates during any Collection Period for which one-month LIBOR (as calculated by the Trustee on the preceding LIBOR Determination Date pursuant to Section 4.5(d)) exceeds 15% per annum; provided further, that if one-month LIBOR (as calculated by the Trustee on any subsequent LIBOR Determination Date pursuant to Section 4.5(d)) decreases thereafter to a rate equal to or less than 15% per annum, the Yield Factor shall be reduced from 2% to 1.5% or 1.75%, as applicable. The first and second provisos above shall not be applicable at any time when the Yield Factor is used with respect to the calculation of (i) the Trust Principal Component or (ii) the aggregate amount of Defaulted Receivables.