<prompt> Translate the following text to EnglishProgramu hii imepunguza uchafuzi zaidi katika muongo uliopita kuliko programu nyingine zote za amri na udhibiti wa Sheria ya Hewa Safi pamoja katika kipindi hicho hicho.  <response>: This program reduced more pollution in the last decade than all other Clean Air Act command-and-control programs combined during the same period. 