<prompt> Translate the following text to EnglishKwa mfano, asilimia 25 ya vifo vya mapema vinavyohusiana na PM hutokea katika kila mwaka wa kwanza baada ya mfiduo na asilimia 17 ya vifo vingine hutokea katika kila mwaka wa tatu.  <response>: This approach assumes that 25 percent of PM-related premature deaths occur in each of the first two years after the exposure and the rest occur in equal parts approximately 17 percent in each of the ensuing three years. 