<prompt> Translate the following text to SwahiliThe mean of this distribution, which is about 331,000 1999, is taken as the central tendency estimate of WTP to avoid a PM-related case of CB.  <response>: Kiwango cha wastani cha usambazaji huu, ambayo ni karibu 331,000, inachukuliwa kama makadirio ya mwelekeo wa msingi wa WTP ili kuepuka kesi ya CB inayohusiana na PM. 